http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Aleksandr_ChudakovAleksandr Chudakov - Revision history2026-05-10T18:16:57ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Aleksandr_Chudakov&diff=7087154&oldid=previmported>Bibliophilen: Added category "People associated with IUPAP"2024-10-11T01:41:16Z<p>Added category "People associated with IUPAP"</p>
<p><b>New page</b></p><div>{{other uses|Chudakov (disambiguation)}}<br />
{{Use dmy dates|date=December 2023}}<br />
{{Infobox scientist<br />
| name = Aleksandr Chudakov<br />
| native_name = {{nobold|Александр Чудаков}}<br />
| native_name_lang = ru<br />
| image = <br />
| image_size = <br />
| caption = <br />
| birth_date = {{birth date|1921|06|16|df=y}}<br />
| birth_place = Russia<br />
| death_date = {{death date and age|2001|1|25|1921|06|16|df=y}}<br />
| death_place = [[Moscow]], Russia<br />
| field = [[Physicist]]<br />
| work_institution = [[Moscow State University]]<br>Chairman of the [[International Union of Pure and Applied Physics|IUPAP]] Cosmic Ray Commission<br />
| alma_mater = [[Moscow State University]]<br />
| doctoral_advisor = S. N. Nernov<br />
| doctoral_students = <br />
| known_for = Chudakov effect<br />
| author_abbreviation_bot = <br />
| author_abbreviation_zoo = <br />
| prizes = <br />
| footnotes = <br />
}}<br />
<br />
'''Aleksandr Evgenievich Chudakov''' (16 June 1921 &ndash; 25 January 2001) was a [[Soviet Union|Soviet]] Russian physicist in the field of [[Cosmic ray|cosmic-ray physics]], known for ''Chudakov Effect'', the effect of decreasing ionization losses for narrow electron-positron pairs and for experimentally confirming existence of the transition radiation.<ref name="ach"><br />
{{cite web| url = http://lib-docs.web.cern.ch/lib-docs/Archives/biographies/Chudakov_A-200104.pdf<br />
| publisher= Who's who at [[CERN]]<br />
| title= Aleksandr Chudakov<br />
| accessdate=2008-07-26 }}</ref><br />
He was also the chairman of the [[International Union of Pure and Applied Physics|IUPAP]] Cosmic Ray Commission.<br />
<br />
==Biography and scientific career==<br />
Aleksandr Chudakov was born on 16 June 1921, and graduated from [[Moscow State University]] (MSU) in 1948<br />
.<ref name="iu">{{cite web<br />
|url = http://www.iupap.org/commissions/c4/cosnews/cosnews45.html<br />
|publisher = [[International Union of Pure and Applied Physics]]<br />
|title = Cosmic Ray News Bulletin<br />
|accessdate = 2008-07-26<br />
|archive-url = https://web.archive.org/web/20081120031609/http://www.iupap.org/commissions/c4/cosnews/cosnews45.html<br />
|archive-date = 20 November 2008<br />
|url-status = dead<br />
}}</ref> In 1953, his experimental confirmation of the existence of the transition radiation, which was predicted by [[Vitaly Ginzburg|Ginzburg]] and [[Ilya Frank]] in 1945, and the effect of decreasing ionization losses for narrow electron-positron pairs, known as the ''Chudakov Effect'', are among Chudakov's famous works. Phenomena similar to Chudakov Effect have been observed in [[quantum chromodynamics]] also.<br />
<br />
Chudakov was the author of series of experiments carried out in the 1950s, which focused on investigation of the [[cosmic ray]]s outside of the [[atmosphere]] with rockets and first [[satellite]]s. As a result, during the [[Sputnik 3|third Soviet sputnik]], he discovered the [[Van Allen radiation belt|Earth's radiation belts]] in collaboration with [[Sergei Vernov]].<ref name="imt">{{cite web| url = http://lib-docs.web.cern.ch/lib-docs/Archives/biographies/Chudakov_A-200104.pdf<br />
| publisher= [[CERN]] Scientific Information Service<br />
| title= Aleksandr Chudakov<br />
| accessdate=2008-07-26 }}</ref><br />
<br />
In 1961, Chudakov and G. T. Zatsepin suggested the [[Čerenkov radiation|air Chernkov method]] for the [[gamma-ray astronomy]] and carried out a pioneering experiment at Katsively, [[Crimea]].<ref name="imt"/><br />
<br />
From the mid-1960s Chudakov headed the design and construction of the [[Baksan Neutrino Observatory|Baksan Underground Scintillation Telescope]], which was put into operation in 1978 and considered to be one of the first large multipurpose facilities for underground physics.<ref name="imt"/> In [[astroparticle physics]] the first class results have been obtained with this telescope which is still in operation.<ref name="bs">{{cite web| url = http://www.inr.ac.ru/INR/Welcome.html<br />
| publisher= The Institute for Nuclear Research of the Russian Academy of Sciences<br />
| title= Baksan Neutrino Observatory<br />
| accessdate=2008-07-26 }}</ref><br />
<br />
==References==<br />
{{reflist}}<br />
<br />
{{Authority control}}<br />
<br />
{{DEFAULTSORT:Chudakov Aleksandr}}<br />
[[Category:Soviet physicists]]<br />
[[Category:Moscow State University alumni]]<br />
[[Category:Academic staff of Moscow State University]]<br />
[[Category:Full Members of the USSR Academy of Sciences]]<br />
[[Category:Full Members of the Russian Academy of Sciences]]<br />
[[Category:1921 births]]<br />
[[Category:2001 deaths]]<br />
[[Category:Cosmic ray physicists]]<br />
[[Category:Russian scientists]]<br />
[[Category:People associated with IUPAP]]</div>imported>Bibliophilen