Ilya Frank

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Ilya Frank
Илья Франк
Sergey Ivanovich Vavilov

Ilya Mikhailovich Frank (

Pavel Alekseyevich Cherenkov and Igor Y. Tamm, also of the Soviet Union. He received the award for his work in explaining the phenomenon of Cherenkov radiation
. He received the Stalin prize in 1946 and 1953 and the USSR state prize in 1971.

Life and career

Ilya Frank was born on 23 October 1908 in

Ilya Frank studied mathematics and

Sergey Ivanovich Vavilov, whom he regarded as his mentor. After graduating in 1930, on recommendation of Vavilov, he started working at the State Optical Institute in Leningrad. There he wrote his first publication—about luminescence— with Vavilov. The work he did there would form the basis of his doctoral dissertation in 1935.[1]

In 1934, Frank moved to the Institute of Physics and Mathematics of the

effect discovered by Pavel Cherenkov, that charged particles moving through water at high speeds emit light. Together with Igor Tamm, he developed a theoretical explanation: the effect occurs when charged particles travel through an optically transparent medium at speeds greater than the speed of light in that medium, causing a shock wave in the electromagnetic field.[1] The amount of energy radiated in this process is given by the Frank–Tamm formula
.

The discovery and explanation of the effect resulted in the development of new methods for detecting and measuring the velocity of high-speed

In 1944, Frank was appointed professor and became head of a department at the Institute of Physics and of the Nuclear Physics Laboratory (which was later transferred to the Institute of Nuclear Research). Frank's laboratory was involved in the (then secret) study of nuclear reactors. In particular, they studied the diffusion and thermalization of neutrons.[1]

In 1957, Frank also become director of the Laboratory of Neutron Physics at the Joint Institute for Nuclear Research. The laboratory was based on the neutron fast-pulse reactor (IBR) then under construction at the site. Under Frank's supervision the reactor was used in the development of neutron spectroscopy techniques.[1]

Personal life and death

Frank married the noted historian, Ella Abramovna Beilikhis, in 1937. Their son, Alexander, was born in the same year, and would continue much of the studies of his father as a physicist.[1]

Frank died on 22 June 1990 in Moscow at the age 81.

See also

References

  1. ^
    S2CID 120260441
    .

External links