The 'cosh' or symmetrized Woods-Saxon nuclear potential

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Abstract
The so-called 'cosh' or symmetrized Woods-Saxon potential which has been used in nuclear physics is discussed and certain comments are made regarding its form factor, depth and radius. A rough estimate of its parameters is also attempted by using various possibilities. This is done either by considering a number of individual nuclei or by least-squares fitting. The potential depth parameter V0, apart from being state dependent, varies also with the mass number of the nucleus. Comments on relevant limitations and inaccuracies are made and the state dependence of V0 is also discussed in relation with the concept of an effective nucleon mass.