ABSTRACTS OF ARTICLES ON LOW TEMPERATURE PHYSICS, NUCLEAR PHYSICS, COSMIC RAYS, AND ACCOUSTICS PUBLISHED IN CZECHOSLOVAK PERIODICALS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00039R000100200002-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 22, 2016
• Document Release Date: March 8, 2012
• Sequence Number: 2
• Publication Date: February 19, 1952
• Content Type: REPORT

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STAT
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 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08 : CIA-RDP82-00039R000100200002-7
ABSTRACTS OF ARTICLES ON LOW TEMPERATURE 'ICS NUCLEAR PHYSICS
C@SMXO RD`S AND ACOUSTICS PUBLISHED IN CZECHOSLOVAK PERIODICALS
f pertinent articles on the subjects indicated in the above title,
Abstracts 4~
covering the three' ear period 1949-1951, are given below. A survey of available
~'
Clovak periodicals revealed that the only likely source of such information
Czechos
was the periodical "Matematiky a Fysiky." However, even this source was found to
contain information which appears to be based either completely, or to a consider-
~.n inform
able extent, on Western work.
Matematiky a Fysiky
Vol ?3; No. jL
(No in6ormation)
Vol 74, N 99
a) pp D~?Dll.
+tPhy.~~. ~'c,~ ~ of Low Temperatures. Part It Methods of Cooling" Dr. Ivan Simon
C himonJ, Cambridge> Mass> (Table US of Cost ents gives Shimon ' s (presumably
S
John Simon) location as Praha -- evidently, on leave from MIT?,
arize$ previous Western work on how temperatures with emphasis on
.
Abstract Summ i
3 basic cooli
ig
methods; 1) latent heat of saturated vapor 2) adiabatic expan?
lion of compressed gas 3) Joule*Thompson effect.
b) pp Dl MD20
"Remarks on the Scattering of Neutrons in Moderators,"
Praha.
Abstracts
Dr, Vilem Santhoizer,
Derives wall-lfloWn equation for mean logarithmic energy loss per col-
neutron with nucleus. Also derived approximate formulas used by
lision of
l
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STAT
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08 : CIA-RDP82-00039R000100200002-7
E. Fermi and F. L. Friedman for computation of average number of collisions re-
quired to slow down a 1 Mev neutron to thermal energy. Bibliography refers to
works by J. Cork, C. Goodman, H. L. Anderson and E. Fermi., F. L. Friedman, R. D,
Evans, and previous article by author in Rozhiedy matematicko..prirodoyedecke, 26,
133, 19L7.
Vol 7L~ No 2, 19Lj9
(Entire issue devoted to joint meeting of Polish and. Czech mathematicians which
3 19k9
Vol 19)_k9
(Continuation of previous issue on joint meeting of Polish and Czech mathematicians)
Vol 7U No !! 1949
(Continuation of previous issue on joint meeting of Polish and Czech mathematiw
cians)
a) pp D10D108
"The Use of Diamonds as Detectors of Radioactive Radiation," Engr CesLr
Simone (Chestndr ShimanyeJ. Physics Institute, Karlova University, Prague.
Abstracts Describes experiments carried out at the Physics Institute to determine
characteristics of diamonds in comparison with ionization chambers. Bibliography
lists 13 Western articles and one by V. Petrzhilka, Fysika v technice, 3, No 7.6,
220, 1948.
b) pp D111"D112
"Lecture by Prof Cosyns in Prague" reported by Engr Cestmir Simone, Pragueo
Abstract; Describes high.spoints of lecutre given on 2 Nov 1949 by Prof Cosyns
at the Physics Inst of Karlova University on the subject of cosmic rays, his field
of specialty at his on institute in Brussels,
in Part - Sanitized Copy Approved for Release 2012/03/08 : CIA-RDP82-00039R000100200002-7
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Vol ?5, No 2, t90
a) pp 89~9~
"On the Theory of Characteristic ('EigenJ Energy of an Electron," Ivan
Ulehla, Praha.
Abstract: Refers to paper by F. J. Be].infante s,ppearing in Physical Review (19h9,
Vol 76, p 226) and. notes that his use of Ferm: quantum electrodynamics without
the usual elimination of longitudinal and scalar photons for his calculation of
the energy of an electron does not yield a single?vlued result. Shows how this
can be overcome by suitable definition of the function of a free photon field,
yielding a.r expression which diverges logaritl'tmically similarly to that obtained
by Weisskopf.
b) pp D1~8u"D171
"Physic3 of Low Temperatures. Part II: Super~Conductivity," Dr. Ivan
Simon
Abstract: Presents brief survey of the experimental as well as theoretical aspects
of the problem of interpreting experimental data on superconductivity in terms of
the theories of electronic conduction in metals. Most of the 22 items in the bib'.
liography are of pre-World War II Western origin.
c) p D221i.
"Measurements in the Field of Ultrasonics" Lecture presented by RN Dr.
Frantisek Rozumplik on Li. May 190 in Prague.
Translation: Ultrasonic generators can be divided into 3 groups: 1) galton
siren, 2) electric spark, electric arc, 3) rods and plates under (a) mechanical
(b) magnetostrictive and (c) piezoelectric effects. Mowever, a particular genera
for in one of these groups need not be in the ultrasonic range although it may
generate fairly high frequencies, For example, with generators in group 3(a) and (b)
frequencies of 8 ko can be obtained.
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 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08 : CIA-RDP82-00039R000100200002-7
In group 3(c), two ultrasonic generators were produced. The first one was
manufactured by the Chirana Plant (National Enterprise) and llth of May Plant in
Brno. Its frequency was 367 kc as determined by a differential tone calibrated
against an oscillatoro For a quartz slab thickness of 00775 cm and at the indi.-
cated frequency an X-cut crystal was selectedo The quartz plate and holder are
submerged in an oil bath; the maximum ultrasonic enemy measured in the oil was
lLi0 witts, It was also shown, by means of a simple arrangement using a circular
quarter-wave reflector suspended on a scale balance, that fixedstanding?J
waves are created not only in the oil bath but aJ.so in the liquid remaining in
the filler spout. From the measured wavelength and frequency, the velocity of
the ultrasonic wave in the given liquid can be determined, The values obtained
show an error of l~, in extreme cases 2%, in comparison with the value given in
the literature.
In the second generator, a frequency of 6.12 Nc was measured with a quartz
slab thickness of 0.033 cm. In this case a Y-cut crystal was used. The quartz
slab and holder were placed in a container to thich various liquids could be
added. The ultrasonic wavelength was determined from the maxima of monochromatic
light of the yellow lines of helium. From the wavelength and frequency, the cal?
culated velocity of the ultrasonic waves in various liquids showed an error, in
comparison with values given in the literature, of less than 0.5%, in most cases
0.3%.
-ENDS
14
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