SCIENTIFIC ABSTRACT LUKYANOV, S.YU. - LUK,YANOV, V.F.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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66702 SOV/109-4-8-22/35 Report on the Secdnd All-Union Conference on Gas Electronics L.A. Sena and Yu.M. Kagan deal with "Elementary Processes of Determining the Motion of Ions in Gas". A paper by Ye. Bedereu (Rumania) dealt with "The Role of Resonance-t-recharging in the Kinetics of Ions". I.S. Stekollnikov considered the initial stages of the development of sparks (corona-leader, main channel and the final channel). B.N. Klyarfelld gave a survey of the ignition processes of the discharges In hIghly rarified gases. The mechanism of the breakdown of a high-vacuum gap was elucidated in a paper by V.L. Granovskiy. L. Tonks (USA) expounded a theory of the motion of electrons in a magnetic trap (see P 1316 of this journal). Academician R. Rompe (Eastern Germany) described a number of experiments on non-stationary plasma conducted by himself. M. Stenbeck (Eastern Germany) gave a generalised theory of plasma. The conference was divided into six sections. The first section was presided over by L.A. Sena and was Card 2/15' 66702 SOV/109_4-8_22/3@ Report on the Second All-Union Conference on Gas Electronics concerned with the elementary processes in gas discharges. The following papers were read in this section: Ya.M, Fogel'- "Transformation of Positive Ions Into Negative Ones in Rarified Gases". Ta. M. Fogel' with V.A. Ankudinov and D.V. Pilipenko - "Capture and Loss of Electrons During the Collision of Past Atoms of Carbon and Hydrogen with the Molecules of Gases". N.V. Fedorenko et al. - "Dissociation of Molecular Ions of Hydrogen Dgring Collisions in Gasit. I.P. Flaks and Ye.S. Solov1yev - "Capture Cross-sections of Electrons in Multicharge Ions in Inert Gases". R.M. Kushnir et al. - "Experimental Investigation of the Resonance Recharging in Certain Single-atom Gases and Metal Vapours". O.B. Firsov - "Qualitative Investigation of InelAstic Coilizi6ns of Atoms". L-.*,r2Volkova - "Effective Excitation Cross-sections of the Spectral Lines of Potassium and Argon". CardVl@ I.P. Zapesochnyy and S.M. Kishko 11some Results of the tk 66702 -Union Co SOV/l09t1,1-%-?2/35 Report on the Second All nference on as ec'eronics Investigation of the Optical Functions of the Excitation Bands of a Negative System". A.A. Voroblyev and A.G. Vlasov - "Investigation of the Scattering of the Electrons in a Betatron Chamber". The second section was presided over by B.N. Klyarfelld and was devoted to the problems of the electrical break- down in rarified gases and in high vacuum. The following papers were read in this section; G.Ye. Makar-Limanov and Yu.A. Metlitskiy - "Electrostatic Control of the Ignition of Glow-discharge Tubes"(see p 1274 of the journal). S.V. Ptitsyn at al. were concerned with the breakdown in a h1gh-voltage mercury rectifier (see p 1278 of the journal). L.G. Guseva "Ignition of the Discharge in Non-uniform Fields at low Gas Pressures" (see p 1260 of the journal). A.S. Soboleva and B.N. Ilyarfelld - "The Discharge Phenomena Between a Point and a Plane at Gas Pressures of .;10-3 - 1 mm Hg". Card 4/1-5@ 66702 sov/log-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics T.B. Fogallson - "Methods of Reducing the Energy Lost in the Formation of a Breakdown". L.I. Pivovar and V.I. Gordiyenko - "Microdischarges and pre-breakdown Currents Between Metal Electrodes in High vacuum". V.A. Simonov and G.P. Katukov - "Invest1gatlon of the Processes of Initiation and Development of a High-voltage Discharge in Vacuumil. E.M. Reykhrudel, and G.V. Smirnitskaya - "The Character- istics of Ignition in High-vacuum in Magnet4c Fields". L.V. Taraso's et al. dealt with the transfer of the electrode material during the pre-breakdown stage in vacuum. N.B. Fozanov et al. - "The Motion of Micro-particles of Substances During Electric Breakdown in Vacuum The th%rd section dealt with the problems of electric sparks,. corona and th4it-practical applications. It was presidod over by I.S. Stekollnikov. The following papers were read: V.I. Levitov et al. - "Probe Investigation of the atc, Card5/,15 Corona Fields". 66702 sov/iog-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics G.N. Aleksandrov - "Elementary Processes in the Ionisation Zone of Corona-type Conductors at Atmospheric Pressures". V.A. Burmakin - "Appearance of a Corona Discharge in Hydrogen and Nitrogen" P.N. Chistyakov et al. - "Some Properties of the Corona Discharge in Hydrogen ift/Coaxial, Cylindrical System". A.S. Soboleva and B.N. Klyarfelld - "Appearance of Discharge Phenomena Between a Point and a.Plane at Gas Pressures of 10-3 - 1.0 mm Hgol. Ya*Yu. Reynet et al. "Methods of Unipolar lonisation of Air By Means of Aero-ionisers (see P 1335 of the journal). M.P. Vanyukov et al. - "Time Spectra of the Radiation of a Spark Discharge in Inert Gases" (see p 1284 of the journal). M.P. Vanyukov and A.A. Mak - "Production of High Temperatures by Means of Spark Discharges". V.A. Peretyagin - "Influence of the Magnetic Field ct the Electric Discharge on the Dividing Surface of Two Media". Card 6/15 66702 SOV(109-4-8-22_/35 Report on the Second All-Union Con erence on Gas Electronics I.S, Stekollnikov - "Now Data From the Study of Long Sparks". - M.I. Sysoyev - "Proper ties of the Breakdown of Compressed Air in a Comparatively Uniform Field in the Presence of Localized Non-uniformities". A.A. Voroblyev et, al. - "Pu3se and Oscillographic Techniques for the Measurement of the Discharge Lags in Dielectrics" (see p 1257 of the journal). A paper by B.N. Zolotykh dealt with the problem of the basic theory of the electric erosion (see p 1330 of the Journal). The fourth section was presided over by S.Yu. Luklyanov and was concerned with the non-stationary and low- frequenoy discharges. The followinZ papers were read: I.G. Nekrashevich and A.A. Labud - "The Nature of the Current Interruption During the Blectric,Explosion of a Metal Wire". V.A. Simonov - "Propagation of Plasma From Local Pulse Sources". G,G, TJ.mofeyev et al. - "Observation of an Zlectr-o- Card 7/li dynamically Compressed Are By Means of an Electron-optical 66702 SOV/109-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics Converter". M.S. Ioffe and Ye.Ye. YushmAnov - "Investigation of the Radial Electric Field in an Ion Magnotron". V.A. Belyayev and N.K. Romanovskiy - "Experiments with an Electron Model of a System with Magnetic Samples", A.M. Andrianov et al. "Distribution of Magnetic and Electric Fields in Powerful Pulse Discharges". G.N. Harding (England) - "Spectroscopic Determination of the Plasma Temperature in the 4'Zeta" Equipment" (see P 1326 of the journal). The papr by Harding aroused a lot of interest and Academician LoA. Artsimovich expressed the opinion that the electrons and ion temperaturez in the "Zeta" should be of the same order; instead, according to Harding, the electron temperature is lower by an order than that of the ions. A paper by S.Yu. Luklyanova and V.I. Sinitsyn was devoted to the problem of spectroscopic investigation of heated t: plasma. Card8/15 66702 SOV/109-4-8-22/35 Report on the Second All-Union Conference on Gas Electronaca I.M. Podgornyy and N.G. Kovallskiy - "New Data on X-ray Radiation During Pulse Discharges" V.A. Khrabrov and M.M. Sulkovskaya dealt with the investi- gation of the neutron radiation in powerful gas discharges in chambers with conducting walls. N.k. Bormunov et al. - "Investigation of the Gas Discharge in a Conical Chamber". S.M. Osovets et al. - "A Turn of Plasma in Transverse Magnetic Field". I.G. Kesayev "Data on the Division of a Cathode Spot on Mercury in a Low-pressure Are" (see p 1289 of the journal). A.B. Robson (England) - "A New Theory of the Cathode Spot" (see p 1295 of the journal). L.N. Breusova - "Positive Column in a Hydrogen Discharge With Stationary and Pulse Loads". I.G. Nek-rashevich and A.A. Labud _"Current Distribution on the Surrace of Electrodes in Electric Pulse Discharges", L.S. EyS - "Some Properties of Gas Discharges in Low-voltage Cardq/15 in Halogen Counters"" K 66M sov/log-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics G.I. Glotova and V.L. Granovskiy - "Comparison of the Initial De-lonisation in the Isotopes of Hydrogen (H and D)11. L.A. Akollzina communicated some results on the pre-breakdown durrent pulses at low pressures. M.Ya. Vasillyeva and A.A. Zaytsev - "Charge-density oscillation Waves in Cylindrical Plasma". L. Pekarek of Czechoslovakia communicated some information on the wave-like phenomena in gas-discharge plasma. B.G. Bre2;hnev dealt with the problem of the determination of the energy of fast ions in pulse discharges. B.B. Kadamtsev - "Convection Instability of a Plasma String". S.I. Braginskiy and V.D. Shafranov - "Theory of a High- temperature Plasma String". The fifth- section was presided over by N.A. Kaptsov and dealt with high-frequency currents in gases. The following papers were read; V.Ye. Golant - "Formation of Ultra-high Frequency Pulse CardlO/15 Discharges in Inert Gases". 66702 sov/iog-4-8-22/3 Report on the Second All-Union Conference on Gas hectronics G.I. Pateyuk - "Influence of the Boundary Conditions on the Formation and Maintenance of HIgh-frequency Discharges". P*3. Bulkiu et al. - "Investigation of a Self-maintained Ultra-high Frequency Pulse Discharge and the Process of its Development". G.N. Zastenker and G.S. Sointsev - "Some Results of the Investigation of the Formation of Low-pressure,High- frequency Discharges". G. Marsenau (USA) - "Conductivity of Weakly Ionised Plasma". A.A. Kuzovnikov - "The Conditions of Transition From High-frequency Corona Discharge at Atmospheric Pressures". V.Ye. Golant - "The relationship Between the Character- istles of the Ultra-high Frequency Current and the Direct Current in Gas Dischargesn. B.B. Lagovfyer analysed the conductivity Qf the disin- tegrating plasma in the window of a resonance discharge tube. S.M. L(svitskiy and I.P. Shashurin dealt with the Cardll/15applicability of the probe method to high-frequency 1@ 66702 SOV/109-4-8-22/.35 Report on the Second All-Union Conference on Gas Electronics discharges (see p 1238 of the journal). The paper by V. Ye. Mitsuk et al. was devoted to the investigation of the ultra-high frequency plasma by mean of the Stark effect. G.S. SoIntsev et al. dealt with the problem of electric fields in a high-frequency discharge at low pressures. Ye. Bedereti of"Rumania read a paper entitle&"High- frequenizy-DIscharges in Methane". The work of the sixth section was devoted to the problems of plasma and its radiation; the section was presided over by V.A. Fabrikant, The following papers were read: YU.M. Kagan - 11NeW73.Wn+R'Ae1%robe Methods of Plasma Invest igation.1 V.I. Drozdov - "Oscillographic Measurements in Plasma". V.A. Simonov and A.G. Mileshkin - "Investigation of the Movement of Plasma by Means of a Mass Spectrometer of the Transit TImell. A.V. Rubchinskiy - "Application of the Oscillations on a Small Anode to the Measurements of the Vapour or Gas Card12/15 Density" (see P 1311 of the journal). 66702 SOV/109-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics A.A..Timofeyev - "Measurement of the Gas Density During the Dyneimle Operation of a Discharge" (see p 1306 of the jouxnal).A.V. Nedospasov The Nature of a Striated Positive Column". V.I. Perell and Yu.M. Kagan "The Theory of Probes for Arbitrary Pressures". Yxi.M, Kagan et al. - "The Positive Column of a Discharge in a Diffusion Regime". Mqk-V. Konyukov - "Influence of the Processes of the Anulhilation of the Negative Ions on Their Concentration in the Column", M.D. Gabovich and L.L. Pasechnik - "Anomalous Scattering, Excitation of Plasma Oscillations and Plasma Resonance" Yu.L. K' Limantovich - "Energy Lost by Charged Particles for the.Excitation of the Oscillations in Plasma (the Langmuir paradox)" and "The Theoz:@of Non-linear Plasma Oscillations". Ye.G. Martinkov and X.G. NekraBhevich - "Dependence of the Temperature in the Near-electrode Region of a Pulse Discharge on the Material of the Electrodes". Cardl3/15 , k 66702 sov/iog-4-8-22/35 Report on-the Second All-Union Conference on Gas Electronics N.A. Neretina and B.N. KlyarCelld - "Formation of Light Spots on the Anode of a Gas Discharge (see p 1301 of the journal). N.A. Matveyeva -"Distribution of Binary Mixtures of Inert Gases in a d.e. Discharge". V.G. Stepanov and V.F. Zakharchenlco - "Some Phenomena in Rarified Plasma"* VIG. Stepanov and V.S. Bezel' - "The Possibility of Obtaining Highly Concentrated PlasmaBu. G.V. Smirnitskaya and E.M. Reykhrudelt - "Some Character- istics of the Discharge in an Ion Pump and in a Magnetic lonisatlon Vacuum Gauge". Ye*T. Kucherenko and O.K. Nazarenko - "Properties of a Discharge with Electron Oscillations in a Magnetic Field" (see p 12@3 of the journal). The paper by L.M. Biberman and B.A. Veklenko considered the approximate methods for determining the concentration of atoms at the radiation levels. Card 14/15 66702 SOV/109-4-8-22/35 Report on the Second All-Union Conference on Gas Electronics I.I. Sobellman and L,A. Vaynshteyn read a paper on "A Non-stationary Theory of the Stark Broadening of the Spectral Lines in Plasma". M.A. Mazing and S.L. Mandel'shtam - "The Broadening and the Shift of Spectral Lines in a Gas-discharge Plasma". R. Lunt (England) - "The Kinetics of Electron Collisions Leading -to the Zxcltatlon of the Moleculax- Hydrogert In a Hydrogen Discharge". V.N. Kolesnikov et al. - "Some Properties of the Are Discharge in an Atmosphere of Inert Gases". A#A. Mak and M#P, Vanyulcov - "Production of High Temperatures By Means of Spark Discharges". Card 15/15 21(8) AUTHORS: TITLE. PERIODICAL: Dobrokhotov, Ye. I., Lazarenko, V. R., SOV/56-36-i-712/62 Luklyanov, S. 48 The Soarch for the Double Decay in Ca (Poiski -dvoynogo //1 -raupada v Ca48) /I Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959, Vol 36, Nr 1, PP 76-87 (USSR) ABSTRACT: In the introluction, the results obtained by publications by other authors, which concerned this subject, (Refs 1-6) are discussed. Por their investigations the authors used a sam&;e enriched up to 72.2 % with Ca48, which contained 423 mg Ca the control sample was enriched with Ca44 up to'94.7 %. Both samples consisted of calcium fluoride powder pressed into thin discs (diameter: 37 mm); the discs were covered by aluminum foils (30p) and were set in aluminum rings. The impurities in the samples amounied to less than 0.02 %. The measuring arrange- ment and the electronic device are described in detail by a scb9matical drawing and a block scheme, and so are the gauging of the scintillation counters, betwepn which the sam- ples were alternatingly located (Fig 1). Energy-gauging was Card 1/3 carri9d out by means of the conversion lines of Ba137 (C16251W). WIff @V_Ivvn@ The Search for the Double //,-Decay In Ca48 307/56-395-1-12/62 Furthermore, the control tests and, finally, measurements them- selveFi were discussed. The latter were carried out in two series from December 1956 to January 1957, and from July to August 1957. The energy interval within which -the search for double /3-decays was carried out depends on the decay energy and on the electron energy losses in the sample. The decay energy for Ca48 is known from mass-spectroscopic measurements (Ref 14) as amounting to (4.3�0.1) ilifeV. The errors occurring, in investigations are estimated as amounting to 1) �@.6 % as a result of amplitude scattering (straggling, spread) by each scintillation counter, 2) +3 @o as a result of errors in counter energy*calibration, 3) +1.5 % because of instability of intensification, 4) �1.5 @- a-s a result of errors committed when measuring the film. The spectra of total electron energy was analyzed in the domain 3.0-4.4 MeV. In the course of 730 hOurs 11 cases of coincidence were recorded in this inter- val if the sample enriched with ce,48 was between the counters, 12 cases of coincidence at Ca44. The difference "Ca48 - Ca44,t is therefore (-1+4.8)/730 imp/h, i.e. (-0-14+0.66)/100 imp/h ( =.A n). The ha7lf-life is determined from t7he formula -Card 2/3 The Search for the Double /3-Decay in Ca,48 SOV/56-.316-1-12/62 No kmn ln 2--A7 -E- , where m denotes the materialing of which n the samples are made, A - the mass number, No - Avogadro's Num- ber, k andyl - coefficients. V* = (0.9/4n).1019a, i.e. one obtains Tcah?f =Rr 0.7-1019a. The following results were obtained*by previous investigations carried out with scintillation counterja McCarthy (Mak-Karti) (Ref 16): 1.1.101 (1955) 18 The authors in a previous paper (Ref 13):> 1-10 a (19561, Awshalom(Avehalom)(Ref 17):&-2.1018a (1956) The authors finally thank I. S. Shapiro for discussions, I. V. Galkin for establishing the electronic.plant, and K. S. Mikhaylov for preparing the scintillators.There are 11 figures, 2 tables, and 17 references, 10 of which are Soviet. SUBMITTED: September 6, 1958 Vard 3/3 21M, 24(7) SOV156-36-6-2166 AUTHORSj Luklyanov, S. Yu., Sinitsyn, V. I. TITLEt Spectroscopic Investigations of Powerful Pulsed Discharges in Hydrogen.III (Spektroskopicheskiye issledovaniya moshchnogo im- pul'snogo razryada v vodorode. III) PERIODICALi Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959, Vol 36, Nr 6, pp 1621 - 1624 (USSR) ABSTRACT: The authors give a report on spectroscopic determinations of the parameters of a high-temperature plasma at the instant of maximal constriction in a cylindrical chamber connected in a shock circuit (cicuit parameters:C . 66 Vo = 35 kv, imax 0 460 ka, dJ/dt = 1.5-1011 a/see (at t-0)). For the purpose of evaluating electron temperature the energy distribution in the continuous plasma spectrum is investigated and the den- sity of the charged particles is determined from the absolute intensity of-the continuum. Intensity measurements were carried out photoelectrically. Ion temperature was determined from the Doppler broadening of the line N IV 3479(33S - 33p) with intro- Card 1/3 duotion of several % of nitrogen into the discharge (observation Spectroscopic Investigations of Powerful Pulsed BOV156-36-6-2166 Discharges in Hydrogen. III along the discharge axis, quadratic Stark effect). The lines were Gaussian in shape, Zeeman splitting-up did not exceed 0-05,1 which was beyond the limits of measuring accuracy. The authors used the spectrograph ISP-28 and quartz object lenses. The method has already been described by an earlier paper. In such a discharge (in 95% H 2 and 5% N.) also lines of highly ionized nitrogen are recorded besides the continuous spectrum. For 9 N II-, N IV-, and N V-lines the table gives the wavelengths, transitions, and excitation energies. From an analysis of the energy distribution in the continuous spectrum it follows that Te >10ev. The density of the charged particles at po=0-05 torr amounted to n. 1.2.1017 cm-3, i.e. in the case of 100% ionization it exceeds the initial density of the neutral molecules in the chamber axis by the 35-fold (T em 100 ev). Figure 1 shows the development of such a discharge with respect to time, figure 2 shows in a diagram the variation of charf:-_!@-" particle density with pressure (straight line), and figure 3 shows the ion temperature Card 2/3 measured by means of the Doppler broadening of the line N IV 3479 Spectroscopic Investigations of Powerful Pulsed SOV/56-36-6-2/66 Discharges in Hydrogen. III at the instant of molecular constriction, in dependence on the nitrogen admixti@re. Ion temperature was determined as amounting to 1.2.100 OK ( at 0.05 H9 ). There are 2 figures, 1 table, and 6 references, 1 of which is Soviet. SUBMITTED: December 16, 1958 Card 3/3 21(7)924(3) AUTHORS: Luklyanov, S. Yu., Podgornyy, I. M. SOV/56-37-1-4/64 TITLE: A Magnetic Trap With a Field Increasing Towards the Periphery (Magnitnaya lovuBhka s polem, narastayushchim k periferii) PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959, Vol 37, Nr 1, pp 27-32 (USSR) ABSTRACT: The present paper gives results of investigations carried out of the behavior of a plasma produced by an electron beam (0-5 a, voltage up to 1 kv). The vacuum chamber was within such a coil system causing the magnetic field; each coil con- oisted of 30 windings of a copper tube and was cooled by running water. The maximum current passing through the coil was 350 a. The magnetic field H2 within the magnetic barrier attained a maximum of 500 Oe, and on the periphery of the chamber a maximum of 19250 Oe (chamber axis - z - 120 cm, width of the barrier 12 cm)(Figs 1,2). Current measurement.' was carried out by means of a probe. The first experiments were carried out for the purpose of investigating the current distribution on the wall in the longitudinal direction Card 113 (parallel to z) in dependence on the gas pressure in the A Magnetic Trap With a FReld Increasing Towards SOV/56-37-1-4/64 the Periphery chamber. Direct measurements showed that charged particles reach the wall only through annular slits in the magnetic field. Figure 3 shows the vaiiation of the electron current on the probeq which has a wall potentialp and during the motion of which along the chamber axis., hydrogen pressure in the chamber amounted to 5.1o-5 torr. The fi6re shows two steep current maxima at the gaps. Figure 4 shows the dependence of the current passing through the magnetic slits on the hydrogen pressure in the chamber. The curves have a particularly sharp pressure dependence for'slits located far from the injector. Experiments carried out with an orientated probe z-howed a certain anisotropy in the flux distribution of the charged particles. Figure 6 shows the experimentally recorded depen- dence of the effective alit width S.on the magnetic field voltage (200-1t100 Oe) for electron energies of 1009 200, and 400 ev in the primary beam at a hydrogen pressure of 2.10-5 torr. At H ;;,,800 Oef the slit width is found to be independent of H and of primary electron energy, and it amounts to about 0.4 mm- With decreasing H the slit width increases Card 2/3 considerably especially in the case of high primary energies. A.Magnetic Trap'With a Field Increasing Towards the SOV/56-37-1-4/61 Periphery For 400 ev, an exponential increase is thus found with falling H; in the case of H - 200 Oe, J*> 5 mm- In conclusion? the authors discussed aprobable explanation of the observed deperldence J'(H). They thank L. A. Artsimoviah, R. Z. Sagdeyev, and 0, B, Firsov for their interesting discussione, and V. N. Sumarokov for his assistance in carrying out the experi ments. There are 6 figures and 3 Soviet references. SUBMITTED: February 1, 1959 Card 3/3 KAPTSOV, N.A., prof.; GVOZD0VER, S.D., prof.; LOPUKHIN, Y.M., doteent; SPIVAK, G.V., prof.; DUBININA, Ye.M., assistent; ZATZSXV. A.A., dotsent; SOLNTSW, G.S., assistent; WE YANOV, Y L_ prof., retsenzent; KARASSV, M.D., dotflent, retsenzent; YERMAKOV, H.S., tekhn.red. [Electronics and radio physical Radiofizicheakeia elektronika. Moskva, 12d-vo Mosk.univ., 1960. 561 P. (MIRA 13:10) (Electronics) (Radio) 27521 5/089/61/011/004/002/008 B102/B138 AUTHORSs Luklyanov, S. Yu., Podgornyy, I. M. TITLE: Magnetic traps with cusped fields PERIODICALs Atomnaya energiya, v. 11, no. 4, 1961, 336 - 344 TEXT: The authors review problems of plasma trapping by stron.- magnetic fields of complex configuration (such as used in the 110gral" "Zeta", or stellarator systems)4' The behavior of plasma in this kind of trap is discussed and principal experimental data are compared. The type of trap considered is as shown in Fig. 1 produced by two coaxial coils which are oppositely directed, so that around zero point the components of field strength will increase with the coordinates% H Z - az; 11r- -ar/2. If plasma is injected ideally into the center of the trap (H=O), it will press apart the lines of force, filling the region of weak field so that a plasma-free central domain is formed. The plasma then withdraws through an annular magnetic gap 4Q e in width (Qe - Larmor radius of electrons at the gap). kt the same time, however, mutual diffusion starts between field Card 1/4 27521 5/08@/61/011/004/002/008 Magnetic traps with ... B102 B138 and plasma, the width of the gap increases, and it moves along the lines of force. Where there is pressure equilibrium, the extension rate of the annular gap will coincide with the rate of formation of the skin layer, and will not depend on magnetic field. The time dependence of the plasma density may be described by dN/dt =-nv iS/4, where n is the total number of particles in the field-free region, n the plasma density, v i the ionic velocity, and S the area of the magnetic gap. This theoretical represen- tation of the behavior of a trapped plasma differs from the real behavior, especially since the behavior and characteristics of a trapped plasma are closely related to the method of injection, The ideal injector which would fill the trap with hot plasma in minimum time, has not yet been found. With actual injectors there is some intermingling between field and plasma, and the field equation has to be accOMDlished by a time- dependent term which also takes into account injector effects. A model of a partly pure plasma with entrapped magnetic flux is discussed. In all cases, the time of escape is finite. In the second part of the paper, some experimental data are discussed and compared; most of them are taken from non-Soviet publications. Details of the "Orekh" apparatus Card 2/4 27521 5/089/61/011/004/002/006 Magnetic traps with... B102/B138 (I. M. Podgornyy, V. N. Sumarokov, Paper no. 204/A, Salzburg Conference on Plasma Physics, 1961), and axisymmetric system of 900 mm diameter, 1200 mm length, and a magnetic field of 4 '5_@ilogauss, are given. The plasma density in it-reaches 1013 - 1014 cm , and its life is 60poec. Some particular results gained at the Institut atomnoy energii im. 1. V. Kurchatova (Institute of Atomic Energy imeni I. V. Kurchatov) are discussed in brief. Finally, it ie pointed out that future research and experiments should be aimed at producing plasma with higher initial tem- peratures and densities. ' This means improving existing injectors as well as changing the geometries of injection and traps. The authors thank L. A. Artsimovich, 1. 1. Gurevich, S. M. Osovets, and 0. B. Firsov for discussions. There are 13 figures, 2 tables, and 16 references, 7 Soviet and 9 non-Soviet. The four most recent references to English-language publications read as follows. Watteau, Phya. Fluids 4, 607 (1961), F. Coensgen, A. Sherman et al. Phys. Fluids, 1, 764 @1760), Nucl. Sci. Abstrs, 14, 24A, 3400 (1960); F. Scott, H. Woorhies. Phys. Fluids, A, '000 (1961). SUBMITTED: June.18, 1961 Card 3/4, 0/ 0 / AUTHORS: Luklyanov, S. TITLE: Investigation moids. III (Coaxial 2716Z; 3/05 61/031/C09/002/019 B109YB138 Yu., Podgornyy, I. M., Chuvatin, S. A. of the electrodynamic acceleration of plas- system) PERIODICAL: Zhurnal tekhnicheskoy fiziki, v. 31, no. 9, 1961, 1026-1032 TEXT: Experimental means, investigation methods; and results of measure- A-11 ments of the electrodynamic acceleration of plasmoids are given. Apparatus (Fig. 1): length of inJector 1,000 mm, capacitor bank of 75 microfarads, charged to 10-20 kv, pressure in the test tube about 10-6 mm Hg, gas amount introduced about 0.3 OM3. The total energy of a plasmoid is determined calorimetrically, the velocity photoelectrically by measuring the time of flight. The masB-spectroscopic analysis of a pla5moid was conducted by the Thomson parabola method (magnetic field 80-790 oersteds, voltage 100-1,325 vi. Results of measurement: Fig. 2 shows the calorimetrically found radial distribution of the energy density for capacitor bank voltages of 20 kv (1), 15 kv (2), 10 kv (3). These 27162 S/057/61/031/009/002/019 Investigation of the B109/B138 values of the total kinetic energy are compared with the photoelectrically measured directional velocity of the plaamoid, from which the efficiency of the injector and the number of accelerated particles is estimated (Table 1). Table 2 shows the mass-spectroscopic investigation of the mass composition of a plasmoid for various gases. The photoelectric measure- ment of velocity fails for fast particles; it must then be determined from the blackenings of the photoemulsion recording the mass-spectroscopic data. Values of up to 3.5-108 cm/sec are found for protons. The formation of very fast particles is not due to the usual acceleration in the electric field since the energy of these particles often surpasses the field energy eU0 (U0 discharge voltage). The authors think it probable that the existence of these fast particles is due to the reasons found by L. A. Artsimovich, A. M. Andrianov, Ye. I. Dobrokhotov, S. Yu. Luklyanov, I. M Podgornyy, V. I. Sinitsin, N. F. Filippov (Atomnaya energiya, 1, 84, 1956@ according to which the formation of such particles is possible with strong pulse discharges. The authors thank V. D. Pis'menn and V. ;A. Chicherov for measurements made. There are 3 figures, 3 tables, and 13 references: 9 Soviet-bloc a.,-d 4 non-Soviet-bloc. Card 2/@.I__ 20455 S/056/61/040/002/008/047 .2 B113/B214 AUTHORS: -Luklyanov, S. Yu., Podgornvy, I., M., Sumarokov, V. N, TITLE? Confinement of a plasma in traps with a magnetic field inoreaning toward @he p,4rlphory PERIODICkLi Zhurnal eksperimentalincy i tecreticheakoy fiziki, v. 40, no. 2., 1961., 448- 451 TEXTs This work represents a continuation of an earlier work (C.f. J. Nuclear Energy, Paz-.' C, 1, 236,, ',960), Also in this case, a coaxial electrodynamic iniector which created accelerated hydrogen clusters, was used for filling the trap with plasma.. The plasma parameters in the trap of the accelerated clusters were measu@rpdfcr which purpose a vacuum chamber of stainless steel was employed; its height was 100 cm, and its diameter 21 cm, The magnetic f,.eld of 1500 oe was generated by two solenoids in the circuit of the injector. Langmu:r probes were used for measuring the plasma parameters, As Is seen -from Fig. 1, in the region of the trap there exis-.s a plasma long after awitching off the digoharge current 2-5/LF, V - 3 - 11I kv) in the injector circuit. The confine- Card 1/7 9)455 S/056/6'1/040/002/008/047 Confinement of a plasma in.- B113/B214 ment time is about 40@Lsec- Probe meanurements showed that the density of the charged particles in the trap increases with increasing potential of the injector.. This is inferr9d f.rom Fig. 2, in which the ior, satura- tion current J on the probe is shown as a function of the injector potential. Assuming that the temperaturs of the charged particles remains unchanged, the saturation cu_rrent is proportional to the ion concentration, Measurements at different injector potentials showed that the electron temperature remained unchanged in both cases. On switching off the magnetic trap no accumulation of the plasma was observed in the vacuum chamber (FJ-9. 3). A comparison of Figs@ 1 and 3 shows that a confinement of the plasma takes place within a certain time. To observe the different stages of plasma formation in the trap, ultrahigh-speed photography was applied., To obsfrve the processes better, a vacuum chamber made of glass instead ol" steel wa@3 used, The magnetic trap used here is shown schematically in Fig, 4 (field @ 6000 oe, duration of a field pulse - 2000@sec). It was found that after the end of injection, the plasma does no leave the.trap immediately@ Now and then the plasma exhibited an abnormal behavior. In this case, the lifetime of the plaamd was much shorter than that in the case represented in Fig. 5. It is not Card 2,7 2oL.55 S/056/61/04b/oO2/008/047 Confinement of a plasma in... 3113/B214 yet clear, however, whether the observed abnornal behavior of the plasma is a consequence of a macroscopic instability or is connected with the method of filling the trap with plasma. There are 6 figures and 5 references: 3 Soviet-bloc and 2 non-Soviet-bloc. SUBMITTED- August 24, 1960 Card 3/7 20@155 S/0 bl/040/002/008/047 B113/B214 % Fig-1 . -t., 1, -, - -. 1@ : I . Coftfinement of a plasma in ... 2o45 S1056161 %40/002/008/047 B113/B214 'Fig. 2 Card 5/7 1 @*. I Confinement of a plasma in ... Fig. ',' M 5 S/05 PB1j,040/002/.008/0471. ) B113 B214 I . .1 Card 6/7 20455 S/056/61/040/002/008/047 Confinement of a plasma in... B110214 Legend to Fig. 41 Schemeof the magnetic trap; 1) coils producing the magnetic field, 2) high-speed photographic camera, 3) evacuation. Fig-4 Card 7/7 top cl::] F,*X. q 41282 S/035/62/000/010/031/128 AOOIIAI01 AUTHORS: Babin, A. N., kuJO-yan-Q@S @Yu., Severnyy, A. B,, Sidorov, G. G., Sinitsyn, V. I., Steshenko, N. V. TITLE: Investigation of hydrogen line broadening in a powerful pulse discharge PMIODICAL: Referativnyy zhurnal, Asironomiya i Geode'ziya, no. 10, 1962, 50, abstract IOA356 ("Izv. Kr"jmsk. astrofiz. observ.", 1962, V. 27, 52 - 70) TEXT: The authors have taken spectra of a powerful pulse hydrogen dis- charge by means of a spectrograph with a diffraction echelette-grating (dis- persion-1.5 Almm). A spectrophotometric study.of broadening of hydrogen emis- sion wings (Ho@ - Hf- ) leads to the following results: 1) In observations of spectra of a self-pinched column in perpendicular direction, emission of wings of hydrogen lines (extending to 30 - 40 A) proves to be broadened due to the linear Stark-effect (at the initial pressure po = O.I.mm Hg); 2) at p. = 0.5 mm Hg emission extends up to 50 - 80 A and is broadened in the wing mainly due, Card 1/2 S/035/62/ooo/bio/631/128 Investigation of hydrogen line broadening In a... AOO1/AlOl probably, to the quadratic Stark-effect; 3) in observations of spectra along the plasma column, broadening of hydrogen emission in wings of8the lines is caused by macroscopic motions of the plasma with speeds of-10 cm/sec. The variation of intensity in wings is well explained by the assumption of orient- ed, along discharge axis, motion of plasma of jet-type with velocity gradients; 4) in observations beyond the dischage axis, both in the transverse and longitu- dinal direction (alongside of the column), broadening of hydrogen emission (in case of p = 0.1 mm Hg) is fully caused by the linear Star-effect. A comparison of*the ci?ed results with the data on emission broadening in lines of solar flares points to analogous causes of broadening and on the dependence of the broadening aspect on direction along which the observation is being performed. There are 9 references. Author's summ'ary [Abstracter's note: Complete translation] Card 2/2 1 VVEDENSKIY, B.A.,, glav. red.; VUL, B.M., glav. red.; SHTETNMAN, R.Ya., zar.. glav. red.; BAIDIN, A.M., red.; VONSOVSKIY, S.V., red.; GALANO, 1U., red.; ZE OV, D.V., red.; ISHLINS"KlY, A.Yu., red.; YAFITSA, P.L., red.; KAFTISOV, N.A.p red.; KOZODAYEV, M.S., red.; LEV10, V.G., red.; LOYTSYANSKIY, L.G., red.;-LUKYANOV,-S.Yu.p red.; RALYSHEV, V.I., red.; MIGULIN, V.V., red.; REBINDF-1, P.A... red.; .13YRKIII, Ya.K., red.; TARG, S.14.y red., TYABLIKOV, S.V., red.; 'HEYNBERG, Ye.L., red.; KHAYKIN, S.E., red.; SHUaNIKOV, A.V., red. [Encyclopedic physics dictionary] Fizicheskii entsiklope- dicheskii slovarl. Moskva, Sovetskaia Entsiklopediia. Vol.4. 1965. 592 p. (MIRA 18:1) M11- - ato --.- 0'"14 To 9 JD1 A96!!66 DIT /2 AP5024693 SOURCE CODE:: UV/0056/65/04@/003/075VO754 AUTHOR:- lazarenkop Vo Rt'; laklyanov., YU-1- ORG: none TITLE: Attempts to'detect double RBe2jtSa,dec, in SOURCE: Zhurnal ekslerimentallnoy i teoreti heskoy Wzikil Vo 498 no. 30 1965, 751-754 9:1 TOPIC TAGS: Betadecay, calcium@# 40toelectron.4 neutrino ABSTRACT-.'.'The described experimental search for:double jS decay In supersedes an experiment.peformed seven .years ago (ZhLW v. 36, 76p 1959). The experimental setup and the scintillation. technique were easentially@ the same,, but-the sample used is much larger, containing 3.8 grams of pure Wep and provision had to be made to en- sure uniformity In the @icollection of the'photoelectr ons from the larger sample. The apparatus andthe proctdure are described briefly. The results show that the life- time of the process exceeds 5. x 3.0:L9 years if the p decay le neutrinoless and 3 x 1018 years for, two-.neutrino'.decay. Authors thank Lo A. Artsimovich and S. N. Vernov for making, the experiment - f'ossible, 1. S., �hapiro for constant interestp wd Yes 1. Lazarey and Le G, Tolai@wa for directly participating @ in the preparation and per- formance of the@ OrIg.. art. baa 1 3 f%wes. BOB cMEt ;2q/ GM DATICt iup,@5/ MUD Mwt ool/ ord mw: oa CeNd KONSTAN"ZINOV, Boris Aleksayevich; LUKITANOV, Tikhon 'Petrovich; SAPAROVA , A.L., reds:ktor; LMOMV, G.fe-7rWVWftfffIM"' 6,daktor. [Operation of electrical equipment of industrial enterprises] EkspluatatViia, elektroustanovok promyshlennVkh predpriiatii. Moskva Goe.energest. Izd-vo, 1955. 383 P. (MLRA 8:8) (Mectric engineering) L rq o T_ 25(5) 3 PHM I BOOK MaWITATION SOV/1359 Spravoebaik mekhanika roashinostroitellnogo zavoda v dvukh tomak4. t. 1: Organi- zatsiya i lumstruktorslaya podgotovka remoptnykh rabot (Hanxtboak for Mechanics of Machinery Manufacturing Plants in Two Volumes. VO)LI: Organization and De- air.-Preparation for Repair Work) Moscow, Mashgiz, 1958. viii, 767 p. 40,000 copies printed. Resp. Ed,: Foskin, R.A.; Candidate of Technical Sciences; Ed.: Gliner., B.M., Engineer; Tech. Ed.: Sokolova, T.F.; Eds. of get: Borisov, Yu.S., Engineer, A.P. Vladziyevskiy, Doctor of TacImical Sciences,, and R.A. Noskin, Candidate of Technical Sciences; Managing Ed. for FIL-ference Literature (Masbgiz): Krylov, V.I., Engineer. PURPM: This han ook is Intended for personnel responsible for repair and maintenance operations in machinery manufacturing plants. COVERAGE: The handbook contains information on the operation of industrial equipment, organization of repair and maintenance, design-preparation for maint- enance work., modernization of metal-cutting machine tools, and the economics of maintenance. Maintenance personnel of the following plants participated in the preparation of this haadbook*. Leningrad Plant imeni Kirov, Xhar1kov Plant Handbook for Mechanics of Machinery (Coat.) BOV1359 for Transport. Machinery imeni Malyshev, Moscow Plant imeni Likhaehev, Chelya- binsk Tractor Plant, etc. Contributions by the following are also acknowledged: workers of scientific research institutes (ENDO, TsNIITMASH, NITI) and vtuzes (.TRU imeni Bauman, Leningrad PoXytechnical Institute, Moscow Institute for Engineering Physics, Moscow Industrial Engineering Institute); and workers in engiaeering and planning institutes (VPTI b. MINTRANSMSH, VPTI b. MINTYAZWSH, GM-8). There are no references. TABLE OF CONTENTS: Ch. I o- Utilization of Equipment 1 Gerieral operating conditions (Kazak, M.I., Docent) 1 lucreasing the durability of equipment (Kazak, M.I., Docent) 2 Basic kinds of machine part wear 2 Initial breaking-in of machine parts 3 Wear of basic machine parts and measures taken to increase their resistance to wear 4 Operation of forging and bressing equipment (Ginzburg, Z-M., Engineer) 11 Drop ha rs 11 Forging machines 13 Crank presses and shears 14 Steam.-hydraulic presses 14 9@T4@ Handbook for Mec@-nics of Machin ry (Cont.) SOV/1359 Operebion of electric installations (Lak"nry, T.L., Engineer) Intrashop electric networks with @-:0-1@ 6 a to 1000 v Electric motors 'Electric fuxnace installations Mercury rectifiers Installations for electric plating Special features of calculating electric energy requirements from d-c sources for electroplating Are welding units Resistance welding machines Lighting installations Grounding systems and the grounding system neutral Electric meters Lubrication of equipment (Ostrolmov, G.A., Engineer) Lubricants Lubricating systems, devices and implements Choice of lubricants Substitution of lubricants Organizing lubrication operations 15 15 16 22 25 24 24 24 25 25 P-7 27 32 32 37 44 49 50 I All H 991 I @ 1pi. @1 Ot I 14 gli! Ira! ij vI V Ili A R1 p1l"M LUKIYANOV, Tikhon Pet 'h; GERR, A.D., reteenzent; ARTSYSIIEVSKIY@ f- . p retsenzent; BIKMIIN, I.Kh., retsenzent; LEZNOV, S.I., nauchnyy red.; FAYERMVI, A.L., red.; TOXER,, A.M.., tekhn. red. [Adjustment of electrical systems]Naladka elaktroustanovok. Moskva, Proftekhizdat., 1962. 618 p, (MIRA 15.9) (Electric apparatus and appliances) (Electric measurements) (Electric engineering-Safety measures) LUKIYANOV V. "Determination of dinsolved oxygen in pulps" by G. Thomasp T. Ingraham. Atom. energ. .12 no.4:352 Ap 162. (min 1,5:3) Ore,--Oxygen content) Thomae, G.) Ingrahamt T.) i I LUKIYANOV, V. Wages based on the finished product. Sots. trud 7 no.V.:108-110 D 162* .(K5A 16:2) 1. Nachallnik planovogo otdela Ydnakogo kirpichnogo zavoda No-4- - (Ydnsk-Wages-Brick ind4stry) VAYISHTSYN., L.; LUKIYAIIOV, V.; KAGIULNOV, Ya. Discussion of the Vnite Russian experi-m'ent- Sots. trud 8 noo.0':28-34 Je 163. (14IRA 16:9) 1. Zaveduyushchiy laboratoriyey ekonomicheskikh issledovaniy Ukra- biskogo iiauclino--issledovatellskogo institute- pi3lichevoy promysh- lennosti Kharlkovskogo soveta narodiiogo Khozyaystva (for Vaynshteyn). 2. Ilachallnik p novcgo otdela Minskogo kirpichnogo zavoda No.4 (for Luklyanov). 3. thallnik p1m.novolro 0-I'dela Suoyexvsh-oy kartonrioy fa- briki Karellskoy ASSR (for Kachanov). (Time study) SEMENOV, V.; GRINBERG, I., inzh.; LUKIYANOV, V., inzh.; HAYOROV, P., inzh.; HORKOVIN, G., inzb. I--- Against conservatism in technolog7 and mec@anical engineering. NTO 2 no.4:32-35 AP 16o. (MIRA 13:6) 1. Predsedatell.soveta per7tchnoy organizatsii Nauchno-tekhnichs- skogo obahchostva konstraktorskogo byuro mashinostroitellnoy promyeblennosti, Moskva (for Semenov). 2. Chleny Nauchno-takhni- cheskogo obahchostva mashinostroitellnoy promyshlennosti, Moskva (for Grinberg, Luklyanov, Mayorov, Morkovin). (Factox7 management-Technological innovations) I - LUKIYANOV, V. Achievements of miners working at the nBa7davevski7e Uklon7 Mine.n @'@-no.4:29 '58. (MIRA 11:6) (Coal mines and mining) LUKIYANOVI V.P master sporta SSSR The strongest on underwater routes. Voen.znan. 41 no.11:40-41 N 165. (MIRA 18:12) I - - - 2--5- 8--95- tUKtYANOV, V. A. Redkiy Slushay Ostrogo Ekssudativnogo Perikardita Malyariynoy Etiologii. Sbornik Nauch. Rabot Lecheb. Uchrazhdenii Mosk. Voyen. Okr. Gorlkiy, 1948, s. 245-47 SO: LETOPIS NO. 30, 1?48 PENIKOV, A.I.; LUKIYABOV. V.@. Freezing of a too2 and the evalwiticn of drilling wudB. Burerile ro.3:3-6 165. (MI RA 18: 5) 1. Turlmennkiy filial noftegazovogo muc-.1hno-issledo- vatellskogo lnstltut@ 68032 SOV/155-58-6-34/36 AUTHORSt 'Priselkov, Yu.A.,Luklyanov, V.B. TITLE: A Maw Method for ih-e-D-e-f-e-rm1naCicn of the Maximum Free Length of Path of the Nuclear B-Particles 10@ PERIODICALs Nauchnyye doklady vysshey shkoly. Piziko-matematicheakiye nauki, 1958',Nr 6,pp 212-218 (USSR) ABSTRACTt The determination of the free length of path of the 8-particles ist mostly carried out by evaluating the experimentally measured weakening of the original radiation in dependence on the thickness of the absorbing layer. The authors describe different already known insertions and then propose to carry out this determination with the aid of the relation 1/4 (7) arc t9 I ') = i - d ( 1-L 10 / R where I, 10 are the intensities and R is the maximum length 35 45 185 137 36 32 of path. Measurements with S t Ca , V; Cs C1 V Card 1/2 32 A Njw Method for the Determination of the Maximum 307/155-58-6-34/36 Fr(.3 Length of Path of the Nuclear B-Partiales showed that (7) is well satisfied for lg 2.2 . The maximum lengths of path calculated with the aid of (7) show a good coincidence with the results of Glendenin Z-Ref 1_7 There are 4 figures, 1 table, and 13 references, 4 of which are Soviet, 6 American, ^4 English, and I Swiss. ASSOCIATIONs Moskovskiy gosudarstvennyy universitet imeni I.I.V. Lomonosova, SUBMITTED: U-11-0scow State Universit-y imeni Y.V. Lomonosov) julY 30, 1958 Card 2/2 LUKIYANOVt ViB.; KOROBKOV, V.I. Study-of the method of relative measurements of radioactivity bY means of dispersion analysis. Radiokhimiia, 7 no.3050-355 165. (HIRA 18:7) LUK'Y-,%.ia7OII V.B.; Gi'@@TIICIEEIV; V.S. Y I Use of dispeersion analysis for selecting the conditions for the deternination of aliphatic alco*-@ols and a2dehydes by paper chromatography. Vest. @,.osk. un. Ser. 2: K-Am. 20 no.I: 25-30 Ja-F 16@- (INURI' 18:3) 1. Kafedra radiokhirtii Mloskovskogo uni-..-ersiteta. LUK'VA?40V V.B.- NESMEYANOV, An.N.; YM-MEYEV, A.P. !t@@ 9 Products of reaction of labeled ca-bon oxides witt a 7-:xtu-e of acetylene and hydrogen In an electrical discharge. Ve8t. Moak. un. Ser. 2: Kh1m. 19 no.61ll-13 N-D 164. (MIRA 1813N/ 1. Kafedra, radiokh1mii Moskovskogo universiteta. LUKIYANOV, V.B.; NESWYANOV, An.N.; YEREWYEV, A.P. Selecting optimum conditions for .he synthesis of carbcrryl com- pounds In an electric discharge. Zav. lab. 30 no.10:1248-1251 t64. (MIRA 18:4) 1. Mookovskiy gosudaratvennyy universitat imeni Lomonosava. I LUKIYANCIII PD-11.0)"Iciv., Ye.Fl Complax investi.cation of the accuracy of -the auantitatiVe determination of norleucine with YAnbydrin. Vest. Mosk. un. Ser. 2.,Khim. 20 no.4:30-33 J14-g 165* (MIRA 18:10) 1. Kafedra radickhim-1-5. Moskovskogo gosudarstvennogo universi- teta. ZABORFITKO, Kaleriya Borisovna; IOFA, Boris Zinov'yevich; LUKIYANOV, ValeriYB,qri_spYich; BOGATYREV, Igor' Olegovich; KONDRASHKOVA, S.F., red. [Radioactive-tracer technique in chemistry] Metod radio- aktivnykh indikatorov v khimii. Moskvap Vysshaia shkola, 1964. 370 p. (MIRA 17:12) @U KIYALNOV, V. B. KMSINSKAYA, E.A. Use of methods of mult.1factor experimenting -in choosing variants of analytical methtJ4TW,'- Zav. lab. 30 no.7i869-872 164. (MIRA 1833) 1. Moshovskiy gosudarstvennyy universitet I'meni Lomonosava. 22331 S/189/61/000/003/001/002 D224/D302 /1 0 e AUTHOR:. Luklyanov, V. B. TITLE:. Calibration of face,meter:s i@r abs@lute measurements of 1Pd -rays and'the determination of the amount of radio- active ingredients PERIODICAL, Moskva Universitet. Vestnik. Seriya II. Xhimiya, no. 3, 19611 ;7-59 T&M, The use of fade meters for absolute measurements of radioacti- vity introduces the problem of calibrating th 'e corresponding apparatus. The calibration coefficient may. be found by dividing the counting-rate of a compound I by its absolute activity measured on a 4p-meter. In practice, however, it is morV expedient to define this coefficient as the.ratio.of the counting-rate of a compound I.to the counting-rate 10 which must have-a place in analytical 5e*ometry (S2,) in the absence of the all too possible side effects of -radiation scattering and ab- sorption. In this case '.I- k wheri I A2 (2) Card 1/6 Io 22331 S/189/61/000/003/001/002 Calibration of face... D224/D302 Besides,the'size of the solid angle, the calibration coefficient k thus includes all fact.ors affecting-the coeffIicient of aounting, so that . 1'. where pi is the proba- k= ? =E(piK,@,qj) (3) bility of decay with emission i of the partial spectrum, Ki is the partial coefficient of 10-ray absorption in the layer between the'preparation and the sensiti4 volume of the meters S. is the partial coefficient of self-absorption and qi is the partial coefficient of reverse reflection from the lining. In the above equation k is called the dispersion coefficient, and the counting-rate corrected for scattering is called the redUced counting-rate. If filtration of the radiation is put into e,ffect, it may.be shown that there is no longer any need to repeat the whole calibration.procedure for each solid angle or for each new absorber when using the dispersion coefficient k. For measurements carried out with solid anglesSj and S:, and absorber 2 thicknesses d1 and d21. the countin.g-rates 10shoul d be proportional to Card 2/ra '22331 S11891611600100310011002 Calibration of tace... D224/D302 the values of the relative solid angles, so that 2 -1 01 (4) IL2 02 Then, if I I l'I 121' 112 And122 are the counting-rates for@@ I , and dI S@42and.d,,_q I and d2 andS? 2.and d2 respectively, and, taking note of expression (2), k 111 2 (5) 1 = Ill"21 or 11 2* k . I - .= 11 21 1@ @21 21 1 Should the measurements be made with different absorbers for a fixed .solid angle, then These three equations contain four unknown coefficients of dispersion, (6) but provideld one of them is known, 2 1,11A21 113 it is easy to find the others: and (7) (for (8) see next caid) Card 3/ 6 .22331 S/189/61/000/003/001/002 Calibration of face... D224/D302 kii k12. [I, k 11, !22 k. III Q2 21 1: . -it- .- , Ili 01 ki, k,j - k,l fit 121 of -2 1" of 6 k' k 21 it 12 11, 122 12 2 k22 = /111 122_ 21- -k1i Since expression (2) represents the four equations, the problem is re- duced to ascertaining I@ for a giveri value of LQ In order to find the coefficients k and the other values ofS-,) and d, it is best to determine from the test the relation of the@ corresponding counting- -rates of the same preparation and to calculate the relation of, the solid angles that are being used. If the error of measurement by the Card 4/6 22331 S/189/61/000/003/001/002 Calibration of face... D224/1)302 counting-rate amounts to + 3% and it the error in the dispersion co- efficient'obtained throuCh direct calibration is of a similar magnftude, the coefficients k computed from formulae (8) will have a precision of + 5%. It is also possible to show that the dispersion coefficients thus found allow the amount of a radioactive ingredient in the preparation to be evaluated. Suppose there is a mixture of two isotopes A and B in which IA' IOA and k A denote the recorded counting-rate, the reduced counting-rate and the dispersion coefficient respectively for isotope A, the corresponding quantities for isotope B being IB' IOB and kB The mixture of the two isotopes will then be characterized by indices AB, and for constant conditions.of measurement (6@-and A) A + B AB kn..d oA + IoB = Io(AB) (9)' Therefore, in accord- ance.(vit.h equation (2) kAB A B -.A A'A- + '.B'@B '.A 'tj + . '.B kB 'I+O(AB) '.A + '.B' f.A +. 1.B '.A -' '.B Card 5/ 6 22331 S/189/61/000/003/001/002 Calibration of face... D224/D302 In the case of k and kB the coefficients are none other than the A apportionment of isotopes A and B in the mixture. Denoting these portions by m. and n, the last expression can be rewritten as k mk + nk (10) Since m + n 1, it.is finally found that AB A B k -kB k '-k The calculated relation- M - AB and AB A (11) 'hip between the dispersion kA-kB kB-kA coefficients for an S53_C1 36 mixture and the activity composition of the mixture is presented graphic form. By varying the conditions of measurement.it is also possible to determine ingredients with closer energies. For an equilibrium mixture of two isotopet, equil. I kAB - .2 (kA + kB (12) Thus, knowing the dispersion co- efficients for an equilibrium mixture and for one of the components,- it'is possible to determine k for the other component. There is 1 figure. ASSOCIATION: Kafedra Radiakhimii (Department of Radiochemistry) SUBMITTED: November 16, 1959 Card.6/6 S/169/63/000/002/(Xr 5/010 4-n@--o er. o measuring the absolute A057/A126 C unt :f r cylinders have 'flariges -@Whichare hermetically 9 .,,,.the' 8 oupled, by means. of the coupling sleeve @ith`thr6ad-. The.preparation is placed Into the space between the cylinders. r' -The holdd -T for the preparation is a 0.2 mm thick aluminum, with thre-4-sman-'operAngs at the oircumferende. for'th6 gas flow and a cen-' i!!;- t --:of-- 15'0@f. :--On- thelatter-there is-placed,the preparation `@@oially prebared, thin",( M2 to 100 fLg/cMP-) PVC film. The cathode of :a.f6w @g/c -the counter'' are -both .'ey-linders, - the copper sleeves ahd the aluminum foil, while ;U'the 1 loop @ is. the-,' andde.- @', A high negative voltage.from.therectifier of the type 03@ekh. was, used, and the. pulses amplified and shaped by- a Y M -2 (USh-2). ampli-n er. :scaling was,carried out with the@ 170 -10000 _10bOO) circuit Was.-Pur e .,ina The' me e e time@: of the@ i 6unt c er was@determined by@the rAdiatechiiical-circuit and lated @witlh` kfeiient,16 @,regu di ad resistances' :.The efficienoy,of the counter was -pntr lle ith par o d w uraniua and. Co, pre atiofis. Thin layers were,:prepared from (ui;anium-200- substances bhTVG _'300_@:Jkg/cm?) lilms ahd a 97% efffaiway of'-the c6unter.16@ -ira@i obs rv d, with: at @s 6.8%. st&iaard devi io i, . 1_11 I . , Y -coin- R. wi. _CO60 e, e, . - - 11, i . ..I th -showed a higher counting rate,in the upper half- ta A: tc@, the -@ absorption AzA self-absorption.@of'l P-rays.. The corres- .0 9.coun r Ua f- th, , i -correa on*, A t e(i @with There are'. 6 figures. was e ermin e: V;x --j KF. r LUKIYANOV, V.B.; PANMTOVA.-L.R.; LAFITSMI.A.V. Evaluation of accuracy of a-datermination of KI (instability constant) by a restriated-logarlthmic-mothod-b&sed on.sper-trnmAtry data. Zhur. neorg. khim.,10.1io.2065-566 F 165. (MIRA 181ll) 1. Submitted july 6, 1964. LUKIYANOVI.Valeriy Borisovich; MELESHKO, V.K., red.; VLASOVA, 'R.A., tekhn. red. [Measurement and identification of beta-radioactive prepara- tions] Izmerenie i identifikatsiia beta-radioaktivnykh pre- paratp,v. Moskva, Gosatomizdat, 1963. 166 p. (MIRA 16:10) (beta raja) (Radioactivi substances) LUK'YANOV,,.,:y..B.; MAKAROV, A.V.,, FEDIN, A.D. I Mathematical statistics in the control of radiometric apparatus. Zav.lab. 29 no.7:8"-849 163. (MIRA 16:8) 1. Moskovskly gosudarstvennyy universitet im. M.V.Lomonosova. (Radiometry) (Mathematical statistics) MKIYANOV, V.B. Use of dispersion analysis for the selection of'conditions fcr deterr'l.ning fatty acids by paper chromatography. Vest.Mo-sk.un. Ser.2:Khim. 18 no.6:39-41 N-D 163. (MIRA 17:4) 1. Kafedra radiokhimii Moskovskogo universiteta. AM4016862 BOOK EXPLOITATION S/ Luklyanov, Valeriy Borisovich measurement and identification of beta radioactive preparations (Izmereniye i identifikatsiya beta-radioaktivny*kh preparatov) Moscow, Gosatomizdat, 63. 0166 p. illus., biblio. 3000 copies printed TOPIC TAGS: Beta activity, Beta active compound, tracer atom, tagged atom, tracer technique, radioactive tracer, Beta radiation properties, Beta radiation registration, Beta radiation identifica- I tion, Beta ray detector,. Beta ray measurement accuracy PURPOSE AND COVERAGE: The book deals with a group of problems con- nected with procedures for measuring and identifying 0 active com- pounds in laboratories. It covers essentially radioactive tracer techniques and is concerned with the radiation rather than the detec- tion aspect of the problem. The book is intended for instructors Card 1/2 AM4016862 in higher educational institutions as'well as for researchers who employ tagged atoms. TABLE OF CONTENTS [abridged]: Introduction 3- Ch. 1. Beta radiation and its properties 5 Ch. II. Registration of P radiation 19 Ch. III. Methods of physical identification of emitters 79 Ch. IV. Estimate of radioactivity measurement.accuracy 114 Literature 163 SUB CODE: PH, SD SUBMITTEDs 12Ju163 NR REF SOV& 038 OTHER: 017 DATE.ACO: l0Dec63 Card 2/2 LUKIYAROV, V.D.. arkhitektor. Flower mlots for parks, plazas, and 'boulevurds. Gor.khoz.MoGk. 2-7 no-8:30- 1. 33 At'; '51- (MLR& 6:8) (Moscow--Park districts) (Park districts--Moscow) IIJKIYAWV V.D. arkhitaktore Problems in the development of the hothouse and nursery industry* Gor.khoz.Mosk. 28 no.12:18-20 D 154. @(MLU 8:3) (Moscow-Hbreeries (Horticultu=e)) IAT.!YANOT, V.D., arkhiteictor I ..... .- _. @.@ @:@ .,.;I Moscow prepares for the festival. Gor.khoz.flosk- 31 no 5:11-13 MY '57. ZHIRL 12:3) (Moacow-Landscape Pardoning) (Moscow-Municipal services) Tiouth-Congresses) =IYANOV, V.D., arkhitektor Duprove entrances to the capital* Gor# khozo Mosk. 34 no.11:3-4 N 16o WU 13: 11) jMoscow-Clity planning) (Moscow--Landscape gardening) LUKIYANOV V.D. Moscow preserves the memory of Lenin. Gor. khoz. Hosk. 36 no.10:10-12 0 162. (MIRA 15:12) (Lenin.. Vladimir Illich.. 100@1924) (Moscov-Monuments) s LIJKIYIUIOVI V. F. "Orthnhydroxyquinoline as a ReagPnt for Colortmetric DeterminAtIon of Traces of Metals. 11 Siib 25 MaY 51, Moscow Order of Lenin State V Imeni 1. V. , monosov. 14 JJO DinamrtRtlons presenteO for 9clence and engineering Aegrees In Moscow during 1951. SO: Sum. No. 4@0, 9 XsY 55 5(2), 50), 5(4) SOV/75-14-2-11/27 OTHORS: Chernikhovju. A., Luklyanov, V. F., Knyazeva, Ye. M. TITLE: Photometric Determination of Zirconium in Phosphorites With Pyrocatechol Violet (Fotometricheskoy-e opredeleniye tsir- koniya v fosforitakh s pirokatekhinovym fioletovym ) PERIODICAL: Zhurnal analiticheskoy khimii, 1959, Vol 14, Nr 2, pp 207-210 (USSR) ABSTRACT: The authors investigated the reaction of zirconium with pyro- catechol violet (3,31,41-trihydroxyfucheone-211-sulfonic acid), and ascertained the optimum conditions for a photometric determination of zirconium in sol*utions of pure salts as well as in natural materials. Hafnium yields a similar re- action with pyrocatechol violet, and therefore disturbs the determination. The determination of zirconium in the presence of a reagent excess is possible since in the range of the absorption maximum of the zirconium complex (X - 620 mg) the pure reagent absorbs only weakly. The absorption maximum of pyrocatechol violet is at 445 mg. Since pyrocatechol violet Card 1/4 is an acid - base indicator, the determination of zirconium SOV/75-14-2-11/27 Photometric Determination of Zirconium in Phosphorites With P@rrocatechol Violet must be carried out at a constant pH value of the solution. The pH value is maintained by an acetate buffer at 5.2 - 5-4. In this range the reagent is yellow, while the zirconium complex is blue. The'formation of the complex takes place much more rapid if the zirconyl chloride solutions are previous- ly treated with concentrated acids (nitric acid, hydrochloric acid or perchloric acid). The absorption of the solutions of the zirconium complex without previous treatment with acids is considerably lower than the absorption of solutions previously treated wi@h acids. The effect of the treatment with acids on the optical density of the solutions is shown in a table. Maximum light absorption is attained 30 minutes after the combination of the two solutions; after I - 2 hours the absorption of the solutions decreases again. The reaction of zirconium with pyrocatechol violet is highly sensitive. The coloration of 0.1 y Zr in a I ml solution is still clearly visible. For the photometric determination the range of from 5 to 70 7 zirconium in 50 ml solution is beat suited. Card 2/4 In this range processes take place according to Beer's law. SOV/75-14-2-11/27 Photometric Determination of Zirconium in Phosphorites With Pyrocatechol Violet In the presence of complexon III neither any amount of alkali and alkaline earth metals at P11 5.2 - 5.4 nor Al, Fe3+ , Be, Ti, Th, UO 2+ , Bi, V, 11o, .1 and Cc disturb the de- 2 termination of zirconium if their quantitative relation to zirconium is smaller than 100 : 1. Ions with intense natural color (Cus' Ifi) disturb the determination if the ratio between their amount and the amount of zirconium surpasses 10 : 1. Among anions Cl 110 C10 and SO, i4 moderate quantities produce no disturbing @ff-ctj P-, 4PO.)-and' organic complex- 4 forming anions disturb the determination. A solution of pyro- catechol violet in an acetate buffer serves as a comparative solution. The results of tho determination of zirconium in phosphorites according to the method described are given in a table. For the purpose of comparison ZrO 2 was determined also according to the X-ray apectra. These determinations were Card 3/4 made by 111. A. Petrova. The determination of zirconium with SOV/75-14-2-11/27 Photometric Determination of Zirconium in Phosphorites With Pyrocatechol Violet pyrocatechol violet in pure solutions of its salts and also in phosphorites is described in detail in this paper, There are 3 figures, 2 tablesp and 10 referencesp 3 of rhich are Soviet. Card 4/4 5 (2) 05712 AUTHORS: Luklyanov V. F., Savvin, S. B., SOV/32-25-10-1/63 V11 TITLZ: Photometric Determination of Thorium in Zircons by Means of the Now "Arsenazo IIP Reagent PERIODICALs Zavodskaya laboratoriyal 1959P Vol 251 Nr 10, PP 1155-1157 (USSR) ABSTRACT: The separation of thorium. (1) from zirconium (II) by the usual methods is wearisome and incomplete. A rapid method of determining (I) in zircons was developedp in which a previous separation of other elements (including (II)) is not necessary. The method is based on the colorimetr1c measurement of (I) by means of the new "arsenazo IIP reagent (lp8-dioxy-naphthalene- 3-06-disulpbonie acid-2,7-bis benzene-2-arsonic acid) i-a the presence of oxalic acid. The reagent was prepared by S. B. Savvin (Ref 2). Already in the presence of 1-35-r . of (1)/50 ml, the reagent produces a green coloring which, in the case of excess reagent, turns into blue-violet. The oxalic acid used in the determination eliminates the influence of (II) (the content of which in zircon may amount to up to 80%) and of titanium, since it forms complex Card 1/2 compounds with these elements. The oxalic. acid acts much less ne U2712 Photometric Determination of Thorium in Zircons by uoy/32-25-10-1/63 Means of the New "Arsenazo III" Reagent upon (I) in the highly hydrochloric-acid medium. Data on the reproducibility of the results obtained by the method described (Table 1), and of the results obtained by determinations of (I) in zircon (Table 2)* are given. The course of analysis indicated shown that calibration curves are used for the determination of (I) with "areenato III", that the colorimetric determination was made by the device of type FEK-M-1 (with a red light filter)p that the analysis takes 3 hours, and that the method is suitable for a content of (I) exceeding O.OOVo. There are 3 figureep 2 tables, and 2 Soviet references. Card 2/2 I . 1 5.5220 AUTHORS: TITLE: PERIODICAL: ABSTRACT: 0 lCard 1/4 77751 SOV/75-15-1--13/29 Luklyanov, V. F., Knyazeva, Ye. M. Complexometric Determination of Zirconium Zhurnal analiticheskoy khimii, 1960, Vol 15, Nr 1, pp 69-72 (USSR) A new procedure of complexometric determination of zirconium is proposed. The proposed procedure is based on the formation of a complex of Zr with complexon III in. an excess of the latter and back-titration of complexon III with Th(NO )4 using arsenazo as an indicator. The following procedure @s given! The sample to be analyzed (alloys, ores, concentrates), 0.1-0.2 g (depending on Zr content), is fused in a platinum dish with 1-5 g of potassium bifluoride and after cooling is dissolved in 15-20 ml of concentrated sulfuric acid. The solution is evaporated to heavy SO 3 fumes, cooled and transferred into a 300 ml beaker. Zirconium is precipitated with 20% NaOH or 25% ammonia solution, filtered, and washed with 5% ammonia solution. The Complexometric Determination of Zirconium l 77751 SOV/75-15-1-13/29 precipitate (zirconium hydroxide) is dissolved in hot 2N HC! and boiled for 2-3 min. Ascorbic acid is added to reduce Fe3+. To the boiling solution an excess of complexon III is added and boiled for 2-3 min; to the cooled solution 1-2 drops of a 1% alcoholic solution of CL-dinitrophenol is added and neutralized with ammonia until a bright yellow color appears. Then 1:2 HM is added carefully until the color disappears (pH 2.3-2.4). Now 6-8 drops of a Q.1% aqueous areenazo solution is added, and the exceds of complexon III is titrated with Th(NO 3)4' Table 1. Effect of interfering elements on Zr determination by the complexometric method (in the first 15 experiments, 15 37 mg Zr was taken; in other experiments, 15.59 mg Zr). a Introduced admi;.@tures; (b) Zr found (mg); (c) error @6); absolute; (e) relative. Card 2/4 TABLE 1 ON,,FOLLOWING CARD (3/4) Col"IplexomeLric D&Levullfla@ioii of Zirconium (7751. S011117 5 -15 -1 -2 3/ (a) 1 (b) 1 (c) (b) (c) M -3 . (d) M (d) 30 Zn2l 15,37 o O (),0 50 uo';-,- 15.:17 O,o 500 Zn',- 15,37- ' 0,() 500 WO"-' 15 '17 0,0 0,0 500 Z1121- 15,37-- (),0 4 1 : 200 CO@ 15,41; 1-(I,OU +0,6 500 bluo" V5 '29 --- o,ofl -(), f; 500 CO 15,37* 0 0 -900 VD 15,460 (),D9 +(),f; 5 Nil' 15,28 -(),09 , 11 5 Ful+ 1 15.59 (1 0,0 200 Nis 09 +0,G :i I-i'V 1",59 o,(-) 1)'0 15 C02f- ' 15,37 .S 1),0 ' 0 0 15 Tilv : 15 + (I, I 200 Co%'- j 15,4 +o 0 , 25 +0 " 1(1(1 CO' 15: , , +( f 0 AW 15,41, 7 +0,m, +0 25 1: 200 LOI .9 I F" 1) o"I o: 6 + 150 IM111 1 15,3 1 0 0 'Zoo Nd3i- 15,69 0,() **After precipitation with NaOH ***Precipitated with ammonia Card -D/4 Precipitated with .ammonia in presence of 11 2 0 2 Co!@inlexometric Determination cX 'Zirconium The method is applicable to samples containing from 2 to 40% Zr. The mean relative error is 0.6%. There are 2 tables; and 15 references, 3 U.S., 4 U.K., 2 German, 6 Soviet. The 5 most recent U.S. arid U.K. references are; Fritz, J., Fulda, M., Analyt. Chem., 20. 1206 (1954); Milner, G., Edwards, J., Analyst 80, 95@ (1955); Milner, G., Barnett, G., Analyt. Chem., 14, 414 (1956); Milner, G., Edwards, J., Analyt. chim. acta, 13, 230 (1955); Fritz, J., Johnson, M., Analyt. Chem., 27, 1653 (1955). SUBMITTED: February 16, 1959 Card 4/4 GRIGORIYEV, V.P.; LUKIYANOV, Y.F.; DUDEROVA, Ye.P. Analytical chemistry of uranium. Report No.l: Luminescence method for determining uranium. Zhur.anal.khim. 15 no.2.-184-190 Mr-Ap 16o. (MIU 13:7) (Uranium-Analysis) (Luminescence) S/075 60/015/003/017/033/xx B005 o66 AUTHORSs Luklyanov, V. F., Savvin, S. B., and Nikol'skaya, I. V. TITLE% Photometric Determination of Microquantities of Uranium by Means of the Arsenazo III Reagent PERIODICAL; Zhurnal analiticheskoy khimii, 1960, Vol. 15, No. 3, pp. 311 - 314 TEXTt In the present communication the authors continued their studies on the analytical properties of the new reagent ar8enazo III, the synthesis and properties of which have been already described (Ref-7). Arsenazo III has the following structural formula: AsO3H2 HO OH H 203As C@ &=N x @b HO SL/'(@ro - H 3 3 This reagent forms with many elements very stable chelates which are stable also to strong acids and in the presence of anions which, in general, have Card 1/4 Photometric Determination of Microquantities 5/075/60/015/003/017/033/XX of Uranium by Means of the Arsenazo III BO()5/BO66 Reagent a masking effect in color reactions (sulfates,phosphates@ oxalates, and others). In strong3.y acid solutions arsenazo III reacts only with tetravalent cations (Ref.7). The authors devised a colorimetric method for the rapid determination of microquantities of uranium by means of arsenazo III. In order to increase the selectivity of the reagent, uranium is reduced to the tetravalent stage prior to determination by means of granulated zinc in the presence of ascorbic acid. Ascorbic acid protects V/ the tetravalent uranium from oxidation by atmospheric oxygen. The best results are obtained if arsenazo III occurs in the determination in a 2-5fold molar excess with respect to uranium. In this case the solution is at once colored violet to red-violet. The color intensity remains constant for at most 2 hours (Fig.1). The color of the complex reaches its maximum value only in strongly acid solutions 03@5 N HC1) (Fig.2). The colori.- metric determinations were performed in a colorimetric photometer of the (FEK-M-1) type by using a red filter, Fig.3 shows the absorption curves of the pure reagent and of its complex with tetravalent uranium in the visible spectrum range. The molar extinction coefficient of the complex has at 670 m ,,g a value of -100000; the optical density of a Card 2/4 Photometric Determination of -Ilicroquantities S/075/60/015/003/017/033/XX of Uranium by Means of the Arsenazo III B005/Bo66 Reagent solution of the complex with a uranium content of 0,.04 Z/ml, measured in a 20 mm. cuvette, is 0.030. Anions (fluoride, phosphate, sulfate) only little affect the determination. From among the cations only zirconium and thorium disturb the determination; the rare earths may be present in a 60fold excess at the most with respect to uranium. In the presence of titanium the solution must be oxidized after the reduction of uranium with zinc by means of hydroxylamine hydrochloride, since otherwise the reagent may be destroyed by the trivalent titanium formed in the reduction. The disturbing influence of zirconium may be considerably reduced by adding oxalic acid, so that the determination of uranium is possible also in the presence of a 20fold quantity of zirconium without appreciable error (Table 1). Thorium disturbs the determination. If the quantities of uranium and thorium are in the same order of magnitude, thorium alone may be determined prior to the reduction of uranium (Ref.6). After reduction with zinc the sum Th+U(IV) is determined. The uranium content results from the difference of the two determinations. Table 2 compares the results of the uranium determination by means of the method described with the results obtain3d by other methods. Accuracy and reproducibility of the Card 3/4 Photometric Determination of Microquantities B/075/60/015/003/017/033/XX of Uranium by Means of the ArBenazo 111 B005/BO66 Reagent method devised are satisfactory, The sensitivity of the method is 0.04 T, uranium/ml, the limit lies at a uranium content of O@002% in the sample to be analyzed. Specifications are given for carrying out the determination. There are 4 figures, 3 tables, and 8 Soviet references. SUBMITTEDt October 15, 1959 Card A/4 S/075/60/015/004/015/030/xx B02O/Bo64 AUTHORSt Chernikhov, Yu. A., Luklyanov, V. F., and Kozlova@ A. B. TITLEt Analytical Chemistry of Thorium. Information 2. Complezo- metric Determination of Thorium in Monazite Concentrates After Its Separation on the Cationite AKY-2 (KU-2) PERIODICAL: Zhurnal analiticheskoy khimii, 1960, Vol@ 15, No. 4, pp. 452 - 454 TEXT; The authors aim at simplifying and shortening the determination of thorium in monazite concentrat.es. The present paper describes the sorption of thorium from hydrochloric solutions on the cationite KU-2 (Ref. 15) with subsequent thorium titration by means of somplexon IIII at pH 2.4 - 2.6 and xylenol orange as an indicator (Ref. 16). Thorium is quantitatively sorbed on the cationite KU-2 from a 35% hydrochloric acid solution (Table 1). High acidity increases the selectivity of the method. The elution curve (Fig. 1) indicates that for a complete desorption of 40 mg of Th, 24 ml of the eluant (20% ammonium carbonate solution) suffice, which is added in quantities of 2 - 3 ml. Together with Th, zirconium and Card 1/3