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Spectroscopy of the odd-odd fp-shell nucleus 52Sc from secondary fragmentation

A. Gade·R. V. F. Janssens·D. Bazin·B. A. Brown·C. M. Campbell·M. P. Carpenter·J. M. Cook·A. N. Deacon·D. -C. Dinca·S. J. Freeman·T. Glasmacher·B. P. Kay·P. F. Mantica·W. F. Mueller·J. R. Terry·S. Zhu
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Abstract

The odd-odd fp-shell nucleus 52Sc was investigated using in-beam gamma-ray spectroscopy following secondary fragmentation of a 55V and 57Cr cocktail beam. Aside from the known gamma-ray transition at 674(5)keV, a new decay at E_gamma=212(3) keV was observed. It is attributed to the depopulation of a low-lying excited level. This new state is discussed in the framework of shell-model calculations with the GXPF1, GXPF1A, and KB3G effective interactions. These calculations are found to be fairly robust for the low-lying level scheme of 52Sc irrespective of the choice of the effective interaction. In addition, the frequency of spin values predicted by the shell model is successfully modeled by a spin distribution formulated in a statistical approach with an empirical, energy-independent spin-cutoff parameter.

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A. Gade, R. V. F. Janssens, D. Bazin, B. A. Brown, C. M. Campbell, M. P. Carpenter, J. M. Cook, A. N. Deacon, D. -C. Dinca, S. J. Freeman, T. Glasmacher, B. P. Kay, P. F. Mantica, W. F. Mueller, J. R. Terry, S. Zhu. 2006-03-02. Spectroscopy of the odd-odd fp-shell nucleus 52Sc from secondary fragmentation. https://doi.org/10.1103/physrevc.73.037309

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