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a) Give one point of difference between nuclear fission and nuclear fusion. b) Suppose we consider fission of a 5626Fe into two equal fragments of 2813Al nucleus. Is the fission energetically possible? Justify your answer by working out Q value of the process. Given (m)5626Fe = 55.93494 u and (m)2813Al = 27.98191 |
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Answer» (a) Fusion takes place when two low-mass isotopes, typically isotopes of hydrogen, unite under conditions of extreme pressure and temperature whereas fission is the splitting of a heavy, unstable nucleus into two lighter nuclei. (b) \(^{56}_{26}Fe\) → 2 \(^{28}_{13}Al\) Q = Δm x 931 Mev = \(\big(\)m[\(^{56}_{26}Fe\)] - 2m[ \(^{28}_{13}Al\)]\(\big)\) x 931 Mev = (55.93494 - 2 x 27.98191) x 931 Mev = -0.02886 x 931 Mev = -26.88 Mev < 0 The fission is not possible energetically. One difference between nuclear fission and nuclear fusion Calculating Q=((m) Fe-2(m) Al)C2 =26.90MeV Justification not possible |
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