Elsevier

Nuclear Physics A

Volume 194, Issue 2, 23 October 1972, Pages 259-291
Nuclear Physics A

Level structure of 54Mn from the 54Cr(p, nγ) reaction

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Abstract

Excitation functions and angular distributions of γ-rays in the reaction 54Cr(p, nγ)54Mn were measured in order to establish the spins and parities of levels in 54Mn. Gamma-ray spectra from the 51V(α, nγ)54Mn reaction were also measured. Using the theoretical predictions of the statistical compound-nucleus model, unique spin assignments were obtained for the 54.5 keV (2+), 156.2 keV (4+), 368.1 keV (5+), 407.4 keV (3+), 1009.9 keV (3+) and 1374.5 keV (2) levels in 54Mn. The most probable spins for the other levels were found to be 838.9 keV (4 or 5), 1073 keV (4, 5, 6 or 7), 1136.2 keV (4, 5 or 6), 1390.7 keV (1 or 0+), 1454.2 keV (1+ or 0+) and 1508.7 keV (2 or 3). Branching ratios and multipole mixing ratios for the γ-rays observed were also obtained. These results were compared with recent theoretical predictions.

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    Present address: Nuclear reactor Research Laboratory, Tokyo Institute of Technology, Ohokayama, Meguro-ku, Tokyo, Japan.

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