Reduced Probabilities for E1 and E2 Transitions in Alternating-Parity Spectra of Heavy Even—Even Nuclei

Abstract

Reduced probabilities for intra/interband E1 and E2 transitions to alternating-parity states of the yrast and first nonyrast bands in ¹⁵⁰Nd, ¹⁵⁴Sm, ^{154, 160}Gd, and ^{162, 164}Er lantanide and ²³²Th and ^236,238u actinide nuclei are studied. The values calculated for B(E1) and B(E2) are compared with available experimental data. Variations in the surface deformation of nuclei upon a collective excitation are taken into account.