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Question: 1 a explain why we need semi empirical mass formula...

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1. (a) Explain why we need semi empirical mass formula to understand the curve of binding energy? (20 marks) (b) Figure 1 shows the excited state of two mirror nuclei, O and 1F , each of them has only one nucleon beyond a doubly magic (Z-8 and N-8) core. Based on neutron or proton separation energy, explain why their Sn and Sp are as in Table (40 marks) (c) The solution to the spherical square-well potential of a deuteron is in the form of transendal equation: k, cot k,R =-k, What deuteron properties can be deduce for this equation? (20 marks) (d) To explain nuclear force, there are several terms need to be considered. Explain (20 marks) why nucleon-nucleon interaction is strongly spin dependent.

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