Method of producing uranium-235 could be developed. By Spring 1941, the MAUD Committee concluded that a bomb was feasible and that a practical Techniques for the separation of uranium-235. Chadwick subsequently coordinated investigations into developing Reporting them until more was known about the neutron cross sections. Small mass of uranium-235 using fast neutrons, Chadwick confirmed the findings, embarrassedly confessing that he had not felt justified in When research by the refugee physicists Rudolf Peierls and Otto Frisch indicated that an enormous explosion was possible with a relatively Chadwick also was on the official BritishĬommittee on atomic bomb research, known as the MAUD Committee, which first convened on April 10, 1940. This he set out to do using his recently completed cyclotron. He cautiously replied that it might be possible but work needed to be done on cross sections, the probabilities of fission as a function Officials on the possibility of a chain reaction in uranium creating an explosion of unprecedented power. He left Cambridge for the University of Liverpool that same year.įollowing the discovery of fission by the Germans Otto Hahn and Fritz Strassmann in December 1938, Chadwick was consulted by British In 1935, he was awarded the Nobel Prize in physics for his discovery Thomson as director of the Cavendish Laboratory.Ĭhadwick had long suspected the existence of a neutral particle in the nucleus of the atom, and in 1932 he succeeded inīombarding the element beryllium with alpha particles. In 1919, Chadwick accompanied Rutherford to Cambridge University when Rutherford replaced J. Trapped in Germany when war erupted the following year, Chadwick spent the First World War interned in a civilian prisoner-of-war camp. Radioactivity problems under Ernest Rutherford, Chadwick traveled to Germany to study with Hans Geiger. In 1913, following graduation from Manchester University, where he worked on various He was born in Manchester, England, on October 20, 1891. James Chadwick was a Nobel Prize-winning physicist who headed the British Mission to the United States during the Manhattan Project. JAMES CHADWICK (Physicist and and Leader of the British Mission at Los Alamos, 1943-1945) Manhattan Project: People > Scientists > JAMES CHADWICK
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