Georgi Timofejewitsch Sazepin

Georgi Timofeyevich Sazepin ( Russian Георгий Тимофеевич Зацепин , English transcription Georgiy Zatsepin ; born 15 ^jul. / 28 May  1917 ^greg. In Moscow , † 8. March 2010 ) was a Russian Particle and astrophysicists.

Sazepin graduated from Lomonosov University in 1941 with a degree in physics . During the Second World War he worked in an aircraft factory in Moscow and Irkutsk. In 1944 he continued his studies and received his doctorate in 1950 on cosmic rays (candidate title) and was then a scientist at the Lebedev Institute . In 1951, he received the State Prize of the USSR for his dissertation work . In 1954 he completed his habilitation (Soviet doctorate) with a thesis on cascade processes in showers of cosmic radiation ( nuclear cascade processes as the basis for the development of extended air showers ) and in 1958 he became a professor. In 1960 he became head of his own laboratory at the Lebedev Institute and from 1970 he was head of the department of high-energy astrophysics and neutrino astrophysics at the then newly founded Institute for Nuclear Research (INR) of the Soviet Academy of Sciences in Moscow, which he remained until his death. At the same time he taught at Lomonosov University, initially in the institute of DV Skobeltsyn, which later became the Department of Cosmic Radiation and Space Physics. In 1999 he received an honorary professorship at the Lomonossow.

In 1961 he and Alexander Yevgenyevich Chudakov suggested looking for cascade showers of cosmic rays caused by high-energy gamma radiation.

In 1966 he published the GZK cutoff with Vadim Kuzmin and independently of Kenneth Greisen . Also from the 1960s he began to deal with neutrino astrophysics and developed methods for observing solar neutrinos at his neutrino laboratory at the Lebedew Institute.

In the 1970s he was instrumental in setting up the Baksan neutrino observatory near Baksan in the Caucasus, the first of its kind in the Soviet Union.

In 1968 he became a corresponding and in 1981 full member of the Soviet Academy of Sciences . In 1982 he received the Lenin Prize and in 1998 the Russian State Prize for the establishment and experiments at the neutrino observatory in Baksan. In 1975 he received the Order of the Red Banner of Labor and in 1987 the Order of the October Revolution . In 1997 he also received the Order of Merit for the Fatherland 4th Class and in 2008 the Order of Honor .

Web links

• Biography at INR (Russian)

Individual evidence

1. ↑ Dissertation spectrum of the densities of extensive air showers