Word: joliot
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...deric Joliot-Curie, France's High Commissioner of Atomic Energy, claimed that making atomic bombs was as easy as rolling off a neutron. His recipe, in United Nations World magazine: "Imagine a sphere of Uranium 235 large enough to be susceptible to explosive chain reaction. Now divide it into two hemispheres each below the 'critical mass.' Place these ... at the two ends of a cylindrical tube. One hemisphere is fixed, the other mobile, so that an explosive charge . . . can cause it to slide swiftly into contact with the other. . . . When the two hemispheres come together, the conditions...
France is building an "atomic village" for 2,000 workers at Saclay, ten miles southwest of Paris, and has a large-scale program headed by Nobel Prizewinner (and Communist Party member) Frederic Joliot-Curie; his staff includes several men who helped plan the Chalk River project. Britain has set up five centers, with experimental piles near Oxford, and has already spent...
...Jean-Frederic and Irene Joliot-Curie succeeded in making boron, magnesium and aluminum artificially radioactive. The atoms of these normally stable substances continued to shoot out particles for some minutes after the preliminary bombardment stopped. Artificial radioactivity is the key mechanism of the atomic bomb...
Reasonable Possibility. The first uranium explosions produced secondary neutrons, which in turn seemed capable of touching off uranium atoms, which would yield more neutrons, and so on. This "chain reaction" looked like the clue to a large-scale release of atomic energy., France's Joliot-Curie did in fact produce a chain reaction, but it died out after a few cycles (TIME, Feb. 12, 1940). The problem was to start one which would not dwindle but multiply...
From France came Frédéric and Irène Joliot-Curie, and Mathematician Henri Laugier. Among England's delegation of 20 were Biologist Julian Huxley, Royal Academician Sir Robert Robinson. England would have sent more but for Winston Churchill's last-minute refusal to grant exit visas to some ten men engaged in war research. From the U.S. came 16, including Harvard's Astronomer Harlow Shapley and General Electric's Chemist Irving Langmuir...