Fission Product Poisons
المؤلف:
U.S. Department of Commerce, National Technical Information Service, 1993
المصدر:
The Nuclear Physics and Reactor Theory Handbook
الجزء والصفحة:
p 34
18-4-2017
2287
Fission Product Poisons
Fission fragments generated at the time of fission decay to produce a variety of fission products. Fission products are of concern in reactors primarily because they become parasitic absorbers of neutrons and result in long term sources of heat. Although several fission products have significant neutron absorption cross sections, xenon-135 and samarium-149 have the most substantial impact on reactor design and operation. Because these two fission product poisons remove neutrons from the reactor, they will have an impact on the thermal utilization factor and thus keff and reactivity.
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