Finite range problem, atomic modeling

Kiuc( ) continuous at the matching radius. The inner solution can be calculated, for any such finite nucleus model and for an axbitrary state i, from a short-range series expansion, whereas the outer solution is known as the irregular solution of the Coulomb problem of the hydrogen-like atom with a point-like nucleus, both in the non-relativistic and the relativistic case. The logarithmic derivative for the outer solution, is very sensi-... 

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