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Given: a fission product absorption cross section of 41,000 barns S.m-149 isotope is stable; therefore, it does not decay out. So, after the impact of
Given: a fission product absorption cross section of 41,000 barns S.m-149 isotope is stable; therefore, it does not decay out. So, after the impact of Xee135 has been redueed thraugh decog (about 1 day), the largest remaining after-shutdown reactivity effect is produced by Sm149.
Question:
Determine the expression of the asymptotic concentration of Sm-149.
149Nd2hr149Pm53hB149Sm
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