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出典:『Wikipedia』 (2011/03/19 19:29 UTC 版)

英語による解説

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Plutonium-241 (Pu-241) is an isotope of plutonium formed when plutonium-240 captures a neutron. Like Pu-239 but unlike ²⁴⁰Pu, ²⁴¹Pu is fissile, with a neutron absorption cross section about 1/3 greater than 239Pu, and a similar probability of fissioning on neutron absorption, around 73%. In the non-fission case, neutron capture produces plutonium-242. In general, isotopes with an odd number of neutrons are both more likely to absorb a neutron, and more likely to fission on neutron absorption, than isotopes with an even number of neutrons.