Energy spectra of inelastically scattered 16-MeV deuterons were measured at angles of 90° and 125° using enriched targets of ${}_{}{}^{230}{}_{}{}^{}\mathrm{Th}$, ${}_{}{}^{240}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{244}{}_{}{}^{}\mathrm{Pu}$, and ${}_{}{}^{248}{}_{}{}^{}\mathrm{Cm}$. In each nucleus the ground state band is observed up to and including the $J^{\pi }=8^{+}$ level. The $\beta$ vibration $J^{\pi }=0^{+}$ level is identified in ${}_{}{}^{230}{}_{}{}^{}\mathrm{Th}$, and in this and the remaining three nuclei evidence for the $\gamma$ vibration is discussed. At least three octupole bands are observed in each nucleus and $K$, $J^{\pi }$ assignments are made in a number of cases. $B\left(E2\mathrm{}\right)\mathrm{}$ and $B\left(E3\mathrm{}\right)\mathrm{}$ values are extracted for selected levels.

NUCLEAR REACTIONS ${}_{}{}^{230}{}_{}{}^{}\mathrm{Th}$, ${}_{}{}^{240}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{244}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{248}{}_{}{}^{}\mathrm{Cm}(d, d^{\prime })$, $E=16\mathrm{}$ MeV, measured $\sigma (E_{d^{\prime }}, \theta =90\mathrm{}°, 125°)$. ${}_{}{}^{230}{}_{}{}^{}\mathrm{Th}$, ${}_{}{}^{240}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{244}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{248}{}_{}{}^{}\mathrm{Cm}$ deduced levels, $J$, $K$, $\pi$, $B\left(E2\mathrm{}\right)\mathrm{}$, $B\left(E3\mathrm{}\right)\mathrm{}$; enriched targets.

• Received 18 June 1975

DOI:https://doi.org/10.1103/PhysRevC.12.1227