Probing Nilsson states in233U

Abstract

The reaction ${}^{234}$U($\stackrel{P\vec}{\mathrm{d}},\phantom{\rule{-0.16em}{0ex}}t$)${}^{233}$U was measured at the Munich Q3D magnetic spectrometer with a polarized deuteron beam. The beam energy was 22 MeV, and a vector polarization of the deuterons of 80% was achieved. Angular distributions of the reaction cross section and analyzing power at seven angles between 5${}^{\ensuremath{\circ}}$ and 35${}^{\ensuremath{\circ}}$ were analyzed. Spin and parity assignments for 33 states were determined by comparison with results from distorted wave Born approximation (DWBA) calculations. Based on these assignments and energy systematics, the observed states were sorted into rotational bands. The Nilsson configurations of the bands are identified by examining the population strengths within each band. Two rotational bands with Nilsson configurations 1/2[501] and 3/2[501] could be identified for the first time.