6-11(b) The fission reaction taken to its stable endpoint fission products isAn + 2~~U ---+ ~gZr + l~~Ce + 4(An).The photons produced in the fission event and in the decay of the fissionproducts are not shown.(c) The prompt energyrelease is the Q-value of the initial fission reaction, i.e.,Ej = Q = [M(2~~U)+1nn-M(~gKr)-Mr~~Ba)-4mn]C2 = 169.5 MeV.(d) The energy released over the time required for the fission fragments todecay to their stable endpoints isEjnd = Q = [M(2~~U)+mn-M(~gZr)-Mr~~Ce)-4mn]c2 = 190.0 MeV.15. A 10 g sample of 235U is placed in a nuclear reactor where it generates 100 Wof thermal fission energy. (a) What is the fissionrate (fission/s) in the sample?(b) After one year in the core, estimate the number of atoms of ~~Tc in thesample produced through the decay chain shown in Eq. (6.37). Notice thatall fission products above ~~Tc in the decay chain have half-lives much shorterthan 1 year; hence all of these fissionproducts can be assumed to decay to ~~Tcimmediately.
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