- Born:
- July 8 [June 26, Old Style], 1895, Vladivostok, Siberia, Russia
- Died:
- April 12, 1971, Moscow, Russia, Soviet Union (aged 75)
- Awards And Honors:
- Nobel Prize
- Subjects Of Study:
- Cherenkov radiation
Igor Yevgenyevich Tamm
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Who was Igor Yevgenyevich Tamm?
Igor Yevgenyevich Tamm (1895–1971) was a Soviet physicist who won the 1958 Nobel Prize in Physics with Pavel A. Cherenkov and Ilya M. Frank for explaining Cherenkov radiation.
Tamm graduated from Moscow State University in 1918 and became a lecturer there in 1924. In 1934, he joined the P.N. Lebedev Physics Institute of the Soviet Academy of Sciences (FIAN), heading its theoretical division until his death.
His early work on electron bonding on crystalline solid surfaces found applications in semiconductor devices. In 1948, he was recruited to investigate thermonuclear bomb creation and contributed to the design of a bomb successfully tested in 1953.
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What is Igor Tamm best known for?
Igor Yevgenyevich Tamm, a Soviet physicist, is best known for sharing the 1958 Nobel Prize in Physics with Pavel A. Cherenkov and Ilya M. Frank for explaining Cherenkov radiation. His early studies on electron bonding on crystalline solids, known as "Tamm surface levels," had important applications in developing solid-state semiconductor devices.
Tamm also contributed to constructing the first Soviet thermonuclear bomb. In 1948, he was recruited to organize the theoretical division of FIAN in Moscow to explore the feasibility of creating a thermonuclear bomb.
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What major discovery did Tamm help make?
Igor Yevgenyevich Tamm, a Soviet physicist, shared the 1958 Nobel Prize in Physics with Pavel A. Cherenkov and Ilya M. Frank for explaining Cherenkov radiation. In 1934, Cherenkov discovered that light is emitted when gamma rays pass through a liquid medium. In 1937, Tamm and Frank explained this phenomenon as the emission of light waves by electrically charged particles moving faster than the speed of light in a medium. Tamm further developed this theory in a 1939 paper.
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How did Tamm contribute to Soviet science?
Igor Yevgenyevich Tamm significantly contributed to Soviet science through his theoretical physics work. He helped explain Cherenkov radiation, earning the 1958 Nobel Prize in Physics with Pavel A. Cherenkov and Ilya M. Frank. His early work on electron bonding on crystalline solids ("Tamm surface levels") found use in semiconductor devices. Recruited in 1948 to investigate thermonuclear bombs, Tamm organized the theoretical division of FIAN and contributed to the design of the first Soviet thermonuclear bomb, which was successfully tested in 1953. Later, he explored controlled nuclear fusion using Tokamak reactors.
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What is Cherenkov radiation, and how was Tamm involved?
Cherenkov radiation is light emitted by charged particles moving through a transparent medium faster than light's speed in that same medium. It appears as a bluish glow in water near some nuclear reactors, caused by high-speed electrons.
Pavel Alekseyevich Cherenkov discovered the phenomenon in 1934. Igor Yevgenyevich Tamm and Ilya M. Frank explained it theoretically in 1937, earning all three the 1958 Nobel Prize in Physics. Tamm's work also contributed to Soviet thermonuclear bomb construction and fusion reactor design.
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How did Tamm’s work influence modern physics or technology?
Igor Yevgenyevich Tamm's work significantly influenced modern physics and technology. His early studies on "Tamm surface levels" on crystalline solids led to applications in solid-state semiconductor devices.
Tamm, along with Pavel A. Cherenkov and Ilya M. Frank, explained Cherenkov radiation, earning them the 1958 Nobel Prize in Physics.
Additionally, he contributed to the construction of the first Soviet thermonuclear bomb. Later in his career, Tamm worked on fusion reactors, using magnetic fields in Tokamak reactors.
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Igor Yevgenyevich Tamm (born July 8 [June 26, Old Style], 1895, Vladivostok, Siberia, Russia—died April 12, 1971, Moscow, Russia, Soviet Union) was a Soviet physicist who shared the 1958 Nobel Prize for Physics with Pavel A. Cherenkov and Ilya M. Frank for his efforts in explaining Cherenkov radiation. Tamm was one of the theoretical physicists who contributed to the construction of the first Soviet thermonuclear bomb.
Tamm’s father was an engineer in the city of Yelizavetgrad (now Kirovohrad, Ukr.), where he was responsible for building and managing electric power stations and water systems. Tamm graduated from the gymnasium there in 1913 and went abroad to study at the University of Edinburgh. The following year he returned to Moscow State University, and he graduated in 1918. In 1924 he became a lecturer in the physics department, and in 1930 he succeeded his mentor, Leonid I. Mandelstam, to the chair of theoretical physics. In 1933 Tamm was elected a corresponding member of the Soviet Academy of Sciences. The following year, he joined the P.N. Lebedev Physics Institute of the Soviet Academy of Sciences (FIAN), where he organized and headed the theoretical division, a position he occupied until his death.
Tamm’s early studies of unique forms of electron bonding (“Tamm surface levels”) on the surfaces of crystalline solids had important applications in the later development of solid-state semiconductor devices. In 1934 Cherenkov had discovered that light is emitted when gamma rays pass through a liquid medium. In 1937 Tamm and Frank explained this phenomenon as the emission of light waves by electrically charged particles moving faster than the speed of light in a medium. Tamm developed this theory more fully in a paper published in 1939. For these discoveries Tamm, Frank, and Cherenkov received the 1958 Nobel Prize for Physics.
Immediately after World War II, Tamm, though a major theoretician, was not assigned to work on the atomic bomb project, possibly for political reasons. In particular, he was branded a “bourgeois idealist” and his brother an “enemy of the state.” Nevertheless, in June 1948, when physicist Igor V. Kurchatov needed a strong team to investigate the feasibility of creating a thermonuclear bomb, Tamm was recruited to organize the theoretical division of FIAN in Moscow. The Tamm group came to include physicists Yakov B. Zeldovich, Vitaly L. Ginzburg, Semyon Z. Belenky, Andrey D. Sakharov, Efim S. Fradkin, Yuri A. Romanov, and Vladimir Y. Fainberg. Between March and April 1950, Tamm and several members of his group were sent to the secret installation known as Arzamas-16 (near the present-day village of Sarov) to work under physicist Yuly Khariton’s direction on a thermonuclear bomb project. One bomb design, known as the Sloika (“Layer Cake”), was successfully tested on Aug. 12, 1953. Tamm was elected a full member of the Academy of Sciences in October 1953 and the same year was awarded a Hero of Socialist Labour. On Nov. 22, 1955, the Soviet Union successfully tested a more modern thermonuclear bomb that was analogous to the design of the American physicists Edward Teller and Stanislaw Ulam.
Tamm spent the latter decades of his career at the Lebedev Institute, where he worked on building a fusion reactor to control fusion, using a powerful magnetic field in a donut-shaped device known as a Tokamak reactor.