NUCLEAR PHYSICS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600200307-0
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: June 29, 2011
• Sequence Number: 307
• Publication Date: September 30, 1948
• Content Type: REPORT

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'THIS IS UNEVALUATEWINFORMATION FOR THE RESEARCH
SOURCE aua?ian book, ledited ry I. Ye. Tamm, State Publishing House for
W n _ -_q .A ~_wa....r Vw..ww... anal T-4'.-A IQL7_
ffhis ).ook is dealkned for physicists and students working in the field
of the phycice of cosmic riya. The followiaj. is an extract tra.nelation of
portions of taa preface grad the table of coatentsj
The aetuors of this collection ire scientists worlduf. in the Theore-
tical section of tra t'h'leiCl Iastitute iwe.3 P.A. LetTedev of the acadeoq?
of Sciences of the US It. The articles were written in 1945 and 1946.
The first article, by I. Ye. Tam, cba,cerur the l;e.eral chaructcr-
istics of the protlec >f the t.esoay the pr:sent state of kuowledie abort
cosidc rays, and an ac.coLnt of fire motives behind e-3r plan for the study of
this problem and beni.id this collection, of articles.
The article bb? :I.a. Uarkov' iatroduoea basic data on the relation of
the intensity of cosmic rays to tae rlsce of oLseivation (elevation above
sea level, Lyomagaet.Le latitude, etc.), and discusses tale problem of the
si,n of the charge sal of ti.e nature of the cosmic rays first pe.atrati.,4
the earth's atmosphere
The following Troup of articles is devoted to the toharal properties
of tae meson. The article of D.I. Slokhintsev and P.G. benirovekiy is a
review of the i.rforrr:.Lion availab1.e on the mass of the neon. The article
of Y.L. Ginaixtrg is a review of- experimental data on the dispersion of mesons
;weed bj the nonelactroca;;aetic interrelation of mesons with atomic
nuclei. The article: o. Ye. L. Fay.,berg dep.ls with the spontaneous disin-
tegration of nesoas.
Since the present-day cascade tueor; of electrouo-photon showers of
cosmic rays is alr..ady adequately- rep eseuted to the literature, it tree
not been included iri tLia collaction of articles. Case S.Z. Helen'kiy,
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STAT
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Shower Processes in Cosmic Rays (to be published soon), and Rossi and Greisea,
Cosmic Rs ?s is Russian translaion of this monograph is availabley. Still,
these theories and their applications are well represented in this collection.
The same holds true with respect to the problem of the losses of energy by
charged particles upon the ionization of the madras throuth which they pass.
Here, although the basic theories of these effects are well known, the
work of S. Fermi in 1940 on the relation of loss during ionization to the
density of the medium is not yet adequately covered in Russian-languaE,e
literature, and since the Wick monogram for the computation of this effect
is not readily available, this collection contains a review by P. Ye. Hunan,
the Crest= part of which is devoted to the Fermi effect.
Following the article of P. Ye. Xunin, there are two articles by 5.4.
Belen`kiy on the electron showers formed bb mesons. The first of these
two articles concerns itself with showers of a small number of particles
(up to 40). The second deals with larger showers, or the ttoffmann Impact,
the a*.udy of which makes possible a series of conclusions on the spin of the
Meson &
Our iuformbtion on the problems which are presented in the las;, three
articles is by no means as detailed and reliance as taut on the prob,eme
presented in the first part of thfe collection, but the problems themselves
are of great importance.
The article by 5.4. Balenrkiy and L. Ye. Losareva deals with compara-
tively recent discoveries, as yet insufficiently investigated, which are
of Treat importance in the formation of a general theory of cosmic rays, and
in the problem of the meson in penetrating rays, a significant part of which
consist of mesons.
The article of V. L. Ginsburg on "stars" in?cosmic rays devotes itself
to the fission of atomic saclei by cosmic rays, especially by masons, and
also to the general problem of neutrons and protons in cosmic radiation.
The final article by V.L. Ginsburg deals with the present status of
the theory of the meson and, in particular, with the various hypotheses now
beit.g advanced on the nature of mania.
All the authors dose works are contained in this collection are either
fit at- or second-generation students of Leoidd Is:,akovich Uandel'shtam, to
whose memory this collection is dedicated.
Introduction 5
Symbolr+ Used in All Articles in this Collection .B
I.Ye. Tame, " he Problem of the Meson and the
Present Statue of Knowledge on Comic Reya" 9
H.A. Markov, "Ueomagnetic Effects and the Nature of the
Elementary Particles in Cosmic Radiation" 31
D.I. Blokbintsev and P.M. ieemirovakiy,wfhe Mess of
the besoc" 56
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 Sanitized Copy Approved for Release 2011/06/29: CIA-RDP80-00809A000600200307-0
TABLE CF CC,4TENTS (Contd)
V.L. Ginzburg, "0n Nuclear Diaperaior. of Mesons"
72
T'e.L. Feynberg, "The Disintegration of the Meson"
80
P.Te, Kunin, "Ionisation Losses of Fast Particles"
114
S..',. Belenokiy, "Ionization Showers Formed by Mesons"
133
S.f.. Belen'kiy, "Bigher Impact and Meson Spin"
146
S.L. Belen'kiy and L. Ye. Lazareva, "The Penetrating
Showers in Cnamic Raga"
169
V.L, Ginz'burg, "heavy Particles and Nuclear Fission
!"Stars") in cosmic Raya"
V.L. Ginsburg, "The Theory of toe Meson and Nuclear
Forces"
227
271
- END
STAT
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