Lifetimes of Excited States of Nuclei with Odd Mass

Abstract

The lifetimes of Coulomb-excited states in ${\mathrm{Ti}}^{47}$, ${\mathrm{Mn}}^{55}$, ${\mathrm{Fe}}^{57}$, ${\mathrm{Zn}}^{67}$, ${\mathrm{Ge}}^{73}$, ${\mathrm{Se}}^{77}$, and ${\mathrm{Mo}}^{95}$ have been measured by a pulsed-beam technique. The observed mean lifetimes were between 0.1 and 12.7 m\ensuremath{\mu}sec. By combining these data with the measured Coulomb-excitation cross sections, we obtained the partial mean life for magnetic-dipole radiation and the ratio ($\frac{E2}{M1}$) for these transitions. The partial $M1$ lifetimes are 20 to 200 times as long as the single-particle estimates.