Question

(a) Beginning with the Weizsäcker mass parabola occurs at a value of atomic number, 2min, semi-empirical mass formula, show that the minimum in aa given min Sym (b) Using the data in the following table, calculate the value of Znin for an ato 146. Parameter av as ac Value 15.8 17.8 0.71123.7 (as appropriate) as ap 0, +34 (MeV) (c) The table below gives the atomic masses of a number of nuclides with A 14 6. (O) Identify any p-stable nuclides among the nuclides listed in the table. Explain any discrepancy between the atomic number(s) of the p-stable nuclide(s) and the value of you obtained in Part (b) of this question. Zmin (ii) Describe the B-decays required to convert 144Gd to a ß-stable nuclide. Atomic masses for A = 146 Element La Ce 57 58 59 60 61 62 63 64 65 145.92579 145.91869 145.91759 145.91311 145.91469 145.91304 145.91725 145.91821 145.92725 Nd Pm Sm Gd Tb

Answer 1

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