Abstract

The problem of the influence of nuclear structure on the calculation of conversion coefficients is discussed and a distinction is made between those effects (static) which are essentially calculable without a detailed nuclear model and the effects (dynamic) for which such a model is mandatory. The theory of the conversion process is developed in such a way as to provide formulas wherein both types of effects are exhibited. No attempt is made to provide specific numerical results for the dynamic effects but instead a framework is provided within which the internal conversion predictions of any nuclear model can be readily tested. In order to do this it is necessary to know not merely the conversion coefficient but the matrix elements for the separate final states as complex numbers. This information, which is available at present for only the $K$ shell, is utilized to provide numerical results for the $K$ shell and for several values of transition energy and atomic number. Electric and magnetic ${2}^{L}$-pole transitions with $1<~L<~5$ are considered.

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