Abram Ioffe

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Abram Ioffe
Ioffe late years 2.jpg
Born
Abram Fedorovich Ioffe

(1880-10-29)29 October 1880 [1]
Died14 October 1960(1960-10-14) (aged 79) [1]
Alma materMunich University (PhD 1905); Saint Petersburg State Institute of Technology (1902) [1]
Awards Lenin Prize (1961)
Order of Lenin [1]
Scientific career
Fields Physics
Institutions State Institute of Roentgenology and Radiology; Leningrad Physico-Technical Institute [1]
Doctoral advisor Wilhelm Roentgen
Doctoral students Nikolay Semyonov

Abram Fedorovich [lower-alpha 1] Ioffe (Russian:Абра́м Фёдорович Ио́ффе,IPA:  [ɐˈbram ˈfʲɵdərəvʲɪtɕ ɪˈofɛ] ; 29 October [ O.S. 17 October] 1880 – 14 October 1960) was a prominent Russian/Soviet physicist. He received the Stalin Prize (1942), the Lenin Prize (1960) (posthumously), and the Hero of Socialist Labor (1955). Ioffe was an expert in various areas of solid state physics and electromagnetism. He established research laboratories for radioactivity, superconductivity, and nuclear physics, many of which became independent institutes.

Contents

Biography

Ioffe on a 1980 Soviet stamp IoffeStamp.jpg
Ioffe on a 1980 Soviet stamp

Ioffe was born into a middle-class Jewish family in the small town of Romny, Russian Empire (now in Sumy Oblast, Ukraine). After graduating from Saint Petersburg State Institute of Technology in 1902, he spent two years as an assistant to Wilhelm Roentgen in his Munich laboratory. Ioffe completed his Ph.D. at Munich University in 1905. His dissertation studied the electrical conductivity/electrical stress of dielectric crystals.

After 1906, Ioffe worked in the Saint Petersburg (from 1924 Leningrad) Polytechnical Institute where he eventually became a professor. In 1911 he (independently of Millikan) determined the charge of an electron. In this experiment, the microparticles of zinc metal were irradiated with ultraviolet light to eject the electrons. The charged microparticles were then balanced in an electric field against gravity so that their charges could be determined (published in 1913). [2] [3] In 1911 Ioffe converted from Judaism to Lutheranism and married a non-Jewish woman. [4] In 1913 he attained the title of Magister of Philosophy [5] and in 1915 Doctor of Physics. In 1918 he became head of Physics and Technology division in State Institute of Roentgenology and Radiology. This division became the Leningrad Physico-Technical Institute (LPTI) in 1917 and eventually the Ioffe Institute.

In the early 1930s, there was a critical need in the Air Defense Forces of the Red Army for means of detecting invading aircraft. A number of research institutes were involved with radiolokatory (radio-location) techniques. The Russian Academy of Sciences called a conference in January 1934 to assess this technology. Ioffe organized this conference, then published a journal report, disclosing to researchers throughout the world the science and technology that would ultimately be called radar. [6]

When the Soviet atomic bomb project began in 1942, Ioffe was asked to lead the technical effort, but refused the job on the grounds that he was too old. He saw great promise in the young Igor Kurchatov, and placed him in charge of the first nuclear laboratory. During Joseph Stalin's campaign against the so-called "rootless cosmopolitans" (Jews), in 1950 Ioffe was made redundant from his position of the Director of LPTI and from the Board of Directors. In 1952–1954 he headed the Laboratory of Semiconductors of Academy of Sciences of the USSR, which in 1954 was reorganized as the Institute of Semiconductors. Following Ioffe's death, in 1960 the LPTI was renamed the Ioffe Physico-Technical Institute and is one of Russia's leading research centers.

Ioffe's students include Aleksandr Aleksandrov, Pyotr Kapitsa, Isaak Kikoin, Igor Kurchatov, Yakov Frenkel, Nikolay Semyonov, Léon Theremin, Boris Davydov, and Lev Artsimovich. Ioffe asked Ernest Rutherford to accept Pyotr Kapitsa to Cavendish Laboratory at the University of Cambridge.

Commemoration

Patents

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References

  1. Also transliterated Fyodorovich.
  1. 1 2 3 4 5 6 7 Абрам Федорович Иоффе. Great Soviet Encyclopedia
  2. Kikoin, I. K.; M. S. Sominskiĭ (1961). "Abram Fedorovich Ioffe (on his eightieth birthday)". Soviet Physics Uspekhi. 3 (5): 798–809. Bibcode:1961SvPhU...3..798K. doi:10.1070/PU1961v003n05ABEH005812.
  3. Mikerov, Alexander (2016), "From history of electrical engineering V: Electron discovery and its properties estimation", 2016 IEEE NW Russia Young Researchers in Electrical and Electronic Engineering Conference (EIConRusNW), St Petersburg, Russia: IEEE, pp. 3–7, doi:10.1109/EIConRusNW.2016.7448102, ISBN   978-1-5090-0445-4, S2CID   22681030
  4. Abram Ioffe article in Electronic Jewish Encyclopedia (in Russian)
  5. Léon Theremin. "Termens Kindheit" (in German). Archived from the original on 2009-05-11. Retrieved 2009-02-25. Am 9. Mai 1913 fand die Verteidigung der Dissertation statt. ... Namens der Jury traten die Professoren Bergman und Chwolson auf, welche der Arbeit Joffes eine äußerst positive Bewertung ausstellten und meinten, dass sie vollauf des Magistergrades würdig sei.
  6. Ioffe, A. F.; “Contemporary problems of the development of the technology of air defense,” Sbornik PVO, February 1934 (in Russian)