不对吧，那为什么原子弹要提纯U235

送交者: Amsel 于 2011-03-15, 12:04:19:

回答: if U238 meets fast neutrons, you will see a big big mashroom cloud. 由 steven 于 2011-03-15, 11:42:12:

http://nuclearinfo.net/Nuclearpower/HowPowerPlantsWork

A problem is that the isotope U-238 (which is not part of the power producing reaction) absorbs these fast neutrons with higher probability than U-235 (which produces the power).

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