Annihilation of polarized positrons in magnetized iron

Abstract

An attempt is made to describe the integral, angular correlations for annihilation of polarized positrons in iron for a saturating magnetic field. A comparison with experiment is made. The positron wave function used to calculate the angular correlation for annihilation of the 3s, 3p, and 3d electrons of iron was that obtained by a WignerSeitz calculation for zero crystal momentum, the potential in the Schrodinger equation being taken as the ion core potential. The inner electron wave functions were assumed to be those of free atomic iron. The angular correlation for the conduction electron annihilation was calculated assuming a degenerate Fermi gas for the electrons and a zero-momentum wave function for the positron.