Total and Differential Conversion Coefficients for Internal Pair Creation in Extended Nuclei

Abstract

We tabulate the total and differential (with respect to the positron energy E p) e + e −-pair conversion coefficients for nuclear transition energies ranging from ħω = 1100 to 8000 keV and for nine nuclear charge numbers Zranging from 50 to 100. Values are given for the electric multipole transitions E1, E2, E3 and the magnetic multipole transitions M1, M2, M3. The calculations were performed taking into account the distortion of the relativistic wave function of both electron and positron by the Coulomb potential of the nucleus, as well as the finite extension of the nucleus described as a homogeneously charged sphere.