Investigation of the 0− → 0+ and 0− → 2+ Beta Transitions in the Decay of 144Pr

Abstract

The first-forbidden beta transitions 0− → 0+ and 0− → 2+ from the decay of 144Pr were studied. The corresponding spectrum shape factors and end-point energies were determined by means of a simultaneous fit of the data on both beta spectra with a theoretical function. The contribution of the induced pseudotensor term has been investigated analyzing the available information on spectrum shape factors, angular correlation, and longitudinal polarization.The data corresponding to both transitions were handled simultaneously. The introduction of the induced pseudotensor term is not indispensable for the interpretation of the experimental data. Besides, the nuclear matrix element [Formula: see text] for the 0− → 0+ transition was determined.