Ce-144 is a fission product formed in fission. The cumulative fission yield is 5.5%. Since all the precursors of Ce-144 have very short half-lives, we can readily assume that all the fission directly yields Ce-144. Consider a fission power reactor operating at 3200 MWthermal for 18 months.
a) At the end of that operating period, what will the activity of Ce-144 be in the fuel? (report your answer in Bq units).
b) How many grams of Ce-144 is that?
c) If the fuel is removed, how much Ce-144 activity is left 2 years after its removal?