Core-Polarization Effects in Charge-Exchange Reactions; Application toNi58(He3,t)

Abstract
The formal relationship between tensor-force distorted-wave Born approximation theory and β decay is stated. Data on the reaction Ni58(He3,t) are given and compared with the cross section calculated with model wave functions adjusted to account for the known retardation in the Cu58 positron decay. The calculated (He3,t) cross section is also retarded but to an extent sensitively dependent on the tensor strength and the configurations present.