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Allison, Samuel King

Samuel King Allison (13.11.1900-15.09.1965) was an American experimental physicist and a member of the National Academy of Sciences (1946). Born in Chicago. He graduated from the University of Chicago (1921). In 1926 — 1930 he worked at the University of California, from 1930 at Chicago (professor from 1942), and in 1944—46 at the Los Alamos laboratory. In 1946-58 and 1963-65 he was director of the E. Fermi Institute for Nuclear Studies. His research concerned X-rays, nuclear physics and reactor design. He took part in the construction of the first nuclear reactor and in bringing about the controlled chain reaction (1942) [234, 551]. Fred Allison (4.VII 1882 - 2.08.1974) was an American physicist. Born in Glade Spring (Virginia). He graduated from Emory and Henry College (1904), where he was professor in 1911—20. In 1922 —53 he was professor at Auburn University (Alabama). His research was in the field of optics and nuclear chemistry. He developed the magneto-optical method of analysis for the detection of rare elements and isotopes. He obtained evidence for the existence of deuterium (1931) and of francium and astatine (1932).