Electromagnetic transition strengths in heavy nuclei

Abstract

We calculate reduced $B(E2)$ and $B(M1)$ electromagnetic transition strengths within and between $K$ bands in support of a recently proposed model for the structure of heavy nuclei. Previously, only spectra and a rough indication of the largest $B(E2)$ strengths were reported. The present more detailed calculations should aid the experimental identification of the predicted ${0}^{+}$, ${1}^{+}$, and ${2}^{+}$ bands and, in particular, act to confirm or refute the suggestion that the model ${0}^{+}$ and ${2}^{+}$ bands correspond to the well known and widespread beta and gamma bands. Furthermore they pinpoint transitions that can indicate the presence of a so-far elusive ${1}^{+}$ band by feeding relatively strongly into or out of it. Some of these transitions may already have been measured in ${}^{230}$Th, ${}^{232}$Th, and ${}^{238}$U.