Elsevier

Nuclear Physics A

Volume 263, Issue 1, 31 May 1976, Pages 12-28
Nuclear Physics A

The doubly odd nucleus 144Pm: (II). Interpretation

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Abstract

Results from the proton transfer reactions, 143Nd(3He, d) and 143Nd(α, t), and γ-ray studies have been used to characterize the levels in 144Pm. The spins, (3He, d)(α, t) cross section ratios and γ-ray branching ratios for the states below 600 keV can be interpreted consistently in terms of the mixed π2d52ν2f72 and π1g72ν2f72 shell-model configurations. The γ-ray intensity ratios measured in the 141Pr(α, nγ) and 144Nd(p, nγ) reactions exhibit a strong and smooth dependence on level spin. Theoretical calculations employing a residual surface delta interaction are in reasonable agreement with the twelve observed low-lying negative parity states. The eight positive parity states between 841 and 1451 keV are presumed to arise from the π1h112ν2f52 configuration.

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Present address: Department of Physics, University of Manchester, Manchester, England.

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