- Georgiy Zatsepin
Georgiy Timofeyevich Zatsepin ( _ru. Георгий Тимофеевич Зацепин) (born OldStyleDate|May 28|1917|May 15 in
Moscow) - Soviet/ Russian astrophysicist, known for his works in cosmic raysphysics and neutrinoastrophysics.
Zatsepin graduated from the Faculty of Physics of the
Moscow State Universityin 1941 and worked for three years at an aircraft building plant in Moscowand later in Irkutsk. He entered aspiranturaof the faculty in 1944 and six years later defended dissertation "Density spectrum of Extensive Air Showers" for Candidate of Sciencesdegree. Prior to this, in 1947-1949 he developed methods of studying and using experimental data discovered, that they are based on nuclear cascade process, with electron- photonprocesses being secondary. Since 1950 he works as senior research assistant at the Lebedev Physical Institute. In 1951 he was awarded the USSR State Prizefor discovering the nuclear cascade process. He defended dissertation "Nuclear-cascade process and EAS" for Doctor of Sciencesdegree in 1954 and became professor in 1958.
In the 1960s Zatsepin predicted
Greisen-Zatsepin-Kuzmin limit. In the same period he begin research of muons and neutrinos laying foundations of neutrino astronomy and neutrino astrophysics. At the neutrino laboratory created by him in Lebedev Physical Institute methods of solar neutrinodetection were developed. He became Corresponding Memberof the USSR Academy of Sciencesin 1968 and Full Member in 1981. In 1982 Zatsepin was awarded Lenin Prizefor creating Station of Cosmic Rays of the Yakut Scientific-Research Base of the USSR Academy of Sciences. For creating the Baksan Neutrino Observatory, and conducting experiments there he was awarded Russian State Prize in 1998.
Zatsepin was also awarded the
Order of the Red Banner of Labourin 1975 and 1981, Order of the October Revolutionin 1987. Until 2006 was the chairman of the Cosmic Rays and Space Physics Chair of the MSU Skobeltsyn Institute of Nuclear Physics.
* [http://www.inr.ru/zatsepin/index.html Georgy Zatsepin] at the
Institute for Nuclear Researchof the Russian Academy of Sciences
Great Soviet Encyclopediaarticle on [http://slovari.yandex.ru/dict/bse/article/00027/33400.htm Georgy Zatsepin]
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