Abstract

The233Th(3He,d)233Pa and233Th(α, t)233Pa reactions were studied with 28.5-MeV3He and 30-MeV α-particles, respectively. The reaction results are interpreted in terms of a distorted-wave Born-approximation analysis. Transferred angular momenta are deduced from (α, t) and (3He,d) cross-section ratios,R=dσ(α, t)/dσ(3He,d). Theoretical cross sections, calculated in the framework of the Nilsson model with pairing and Coriolis interactions included, are in reasonable agreement with experiment. Rotational bands built on the following Nilsson proton configurations are identified in233Pa: 1/2−[530↑], 3/2+[651↑], 1/2+[660↑], 5/2+[642↑], 5/2−[5231↓], and 3/2−[521↑].

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