SCIENTIFIC ABSTRACT PAFOMOV, V.YE. - PAGAVA, G.D.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001238720018-9
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: January 3, 2017
• Document Release Date: August 1, 2000
• Sequence Number: 18
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

PAFOMOV, V-ye-
Izv. vys-,--ucheb zav;
Transient radiation in the-case of oblique- (14115:7)
radiofiz. 5 n0-394&01489 '62-
nst tut imenj p.p.jabodeva AN SSSR.
1, FizicheskiY i
(Faectrowmetic waves

,~-~Ov ~Iv - Y~- - ng throUgh DlatOG, Zb=f
Radiation from a charged particle movi (MIRA 13:12)
eksp. i teor. fiz. 39 no. 1:134-137 11 16o.
1. Fizicheskiy institUt imeni P.N. Lebedeva AN SSSR-
(Blectron optics)

84701
S/02 60/133/006/003/016
0 J/-? R 2-) B019YB054
AUTHOR: Pafomov, V, Yes.
TITLE: Influence of Multi le Soatte-4-- on Transition Radiation
PERIODICAL: Doklady Akademii nauk SSSR, 1960p Vol. 133, No. 6,
PP. 1315-1316
TEXT: In the introduction, the author briefly explains the generation
of transition radiation during the motion of charged particles through
the interface.of two media. He points to the increase in energy of
transition radiation which in the relrAivistio case is proportional to
the incTease in energy of particles, and describes the production of transi-
tion radiation quanta. He studies the motion of a point charge through
the surface separating a medium from the vacuum; he proceeds from formula
(1) for the amplitude of the spherical wave field of transition radiation.
Here$ the field amplitude is proportional to the path length difference
of the coherent interaction of particles with the waves in the vacuum
and in the mediumt which depends on the angle between the direction of
wave propagation and the direction of motion of particles. With the use
Card 1/3

84701
Influence of Multiple Scattering on Transition B/020/60/133/006/003/016
Radiation B019/BO54
2 2N/m, 0 G) E/Po2, and Co # , E 2E2.4,.)4L,
of the definitions 6) 0 47te or - 0 6 or a
where E is the total energy of particlesp E 9 - 21410 evv ji -the rest mass
of the particles, and L the unit of radiation length, as well as
Et 0 2)3/E2,
(6)0 L/O)-(Ao a the author derives a formula for the cases B
smaller than Ef, formula (7) for E >> El, formula (8) for E > El, and a
formula for the spectral densities of the radiation energy for B - El.
Prom these investigations it appears, among other things, that for
frequencies 6j< Wor the field of transition radiation is mainly formed
on the way in the vacuum. Thus, multiple scattering does not reduce the
probability of emission of transition quanta. Multiple scattering is of
considerable importance if, on the way s V - C/W(F,/pe 2)2 of the coherent
interaction of particles with the waves in the vacuum, the particles move
out under the angle 0 - go 2/Eq In this case, new frequenciesq for which
G) < Q < (j * holds, appear in the spectrum. Further, El is the particle
or or
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84701
Influence of Multiple Scattering on Tranaition 8/020/60/133/006/003/016
Radiation B019/BO54
energy at which or
r There are 5 Soviet references.
ASSOCIATION: Fizioheskiy institut im. P. N. Lebedeva Akademii nauk SSSR
(Institute of Physics imeni P. N. Lebedev of the Academy
of Sciences, USS )
PRESENTED: April 14, 1960, by D. V. Skobelltsyn, Academician
SUBMITTED: Maroh 30, 1960
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SOV/26-58-12-2/44
AUTHOR: Pafomov, V.Ye., Candidate of Physical and Mathematical
Sciences
TITLE: An Outstanding Discovery of Soviet Physicists (Vydayushche-
yesya otkrytiye sovetskikh fizikov) A Contribution to the
Award of the Nobel Prize for Physics for 1958 to P.A. Che-
renkov, I.Ye. Tamm and I.M. Frank (K prisuzhdeniyu nobelev-
skoy premii. po fizike za 1958 9- P.A. Cherenkovu, I.Ye. Tammu
i I.M. Franku)
PERIODICAL: Priroda, 1958, Nr 12, Pp 11-14 (USSR)
ABSTRACT: The article sketches briefly in popular language the Cherenkov
effect. Ye.M. Brumberg and S.I. Vsvilov did preliminary re-
search. The successful development of this work by P.A.
Cherenkov, I.Ye. Tamm and I.M. Frank led to their receiving
the Nobel Prize for physics for 10,56.
There are 2 diagrams and 3 photos.
ASSOCIATION: Fizicheskiy institut im. P.N. Lebedeva AN SSSR, Moskva (The
Physics Institute imeni P.N. Lebedev, AS USSR, Moscow%
Card 1/1

PAFOMDV, V. Yo., Uand Phys-Math Sol -- (diss) /The theory of
Vavilov-Cherenkov radlationonisotrop-la media in the vresence of
11mItations," Moso 1958. 7 PP. (Acad Sol USSR, Phys Inst Im.
P. N. Lebedev), 125 copies. Bibliogr at end of UxUR text (15
titles). (KL, 9-58, 113)

21(7)
AUTHORS: Agranovich, V. If., Pafomov, V. Ye.9 QOV/56-36-1-z2/62
Rukhadze, A. A. -------
TITLE: On the Cherenkov Radiation of an Electron Moving in a Kedium
With Spatial Dispersion (0 cherenkovskom izluchenii elektrona,
dvizhushchegosya v srede s prostranst7ennoy dispersiyey)
PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959,
Vol 36, Nr 1, pp 238-243 (USSR)
ABSTRACT: The present paper deals with Vavilov-Cherenkov radiation in an
isotropic gyrotropic medium in consideration of spatial
dispersion. The formula for the total losses, which corresponds
to this case, is written down. In consideration of spatial
dispersion, Cherenkov radiation propagates on the surface of
cones with the aperture angle-~i. The next chapter of this
paper deals with the distribution of intensities over these
cones. The formula for the total intensity of Cherenkov
radiation here takes the form of a sum of the intensities
distributed over the individual Cherenko-i cones. For a more
intense study of the distribution of the intensity of Cherenkov
radiation, the author investigates several possibilities of
Card 1/4 taking the spatial dispersion of the medium into account, For

On the Cherenko7 Radiation of an Electron Moving in a
Medium With Spatial Dispersion
frequency ranges which are fax from the eigenfrequencies of
the medium it is possible to determine the solution for the
decomposition of "direct" dispersion. Within this frequency
range it holds uniquely that -
n2 ((J) = F_ (4J)/(l +o( (60)), and Cherenkov radiation will be
0
distributed over the surface of a single cone. In the domains
near the eigenfrequencias of the medium, spatial dispersion
may be of essential influenoe and in this case a development
of the "inverse" dispersion must be used. Assuming that the
condition F_ 21A] 0 Cherenkov radiation is distributed
over one cone, but with 13