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Operation Epsilon was the codename of a program in which Allied forces near the end of World War II detained ten German scientists who were thought to have worked on Nazi Germany's nuclear program. The scientists were captured between May 1 and June 30, 1945, [ 1 ] as part of the Allied Alsos Mission , mainly as part of its Operation Big sweep ...
Allied work on nuclear fission had been motivated by scientists, many of whom were refugees from Nazi Germany, who feared a German atomic bomb program was underway. The discovery of fission had taken place largely in Otto Hahn 's Berlin laboratory, and many scientists in the United States held the work of German scientists, especially Werner ...
In nuclear fission events the nuclei may break into any combination of lighter nuclei, but the most common event is not fission to equal mass nuclei of about mass 120; the most common event (depending on isotope and process) is a slightly unequal fission in which one daughter nucleus has a mass of about 90 to 100 daltons and the other the ...
“Nuclear fission power plants have the disadvantage of generating unstable nuclei; some of these are radioactive for millions of years,” the International Atomic Energy Agency states on its ...
Krypton-85, with a half-life 10.76 years, is formed by the fission process with a fission yield of about 0.3%. Only 20% of the fission products of mass 85 become 85 Kr itself; the rest passes through a short-lived nuclear isomer and then to stable 85 Rb. If irradiated reactor fuel is reprocessed, this radioactive krypton may be released into ...
Photofission is a process in which a nucleus, after absorbing a gamma ray, undergoes nuclear fission and splits into two or more fragments.. The reaction was discovered in 1940 by a small team of engineers and scientists operating the Westinghouse Atom Smasher at the company's Research Laboratories in Forest Hills, Pennsylvania. [1]
The fission process often produces gamma rays and releases a very large amount of energy, even by the energetic standards of radioactive decay. Scientists already knew about alpha decay and beta decay , but fission assumed great importance because the discovery that a nuclear chain reaction was possible led to the development of nuclear power ...
This process separates spent fuel into 3 fractions: uranium, plutonium isotopes and other transuranium elements, and nuclear fission products. The uranium and transuranium elements are recycled into new fuel rods, and the fission products are eventually converted to glass and metal blocks for safer disposal. Because the combined transuranium ...