Seniority Mixing in1f72Nuclei

Abstract

The ($d, t$) experiments on nuclei in which the $1f_{\frac{7}{2}}$ shell is filling with neutrons and protons show several strong $l=3\mathrm{}$ peaks. This is interpreted as showing that the eigenfunctions describing nuclei in this region do not have well defined seniority. The Elliott generating procedure provides an alternative classification for the eigenfunctions and leads to states of mixed seniority. The strengths of the transitions calculated by use of these wave functions are generally in good agreement with experiment.