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arXiv · 2101.12182

Spectroscopy of $^{33}$Mg with knockout reactions

D. Bazin·N. Aoi·H. Baba·J. Chen·H. Crawford·P. Doornenbal·P. Fallon·K. Li·J. Lee·M. Matsushita·T. Motobayashi·H. Sakurai·H. Scheit·D. Steppenbeck·R. Stroberg·S. Takeuchi·H. Wang·K. Yoneda·C. X. Yuan
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Abstract

The structure of $^{33}$Mg was investigated by means of two knockout reactions, one-neutron removal from $^{34}$Mg and one-proton removal from $^{34}$Al. Using comparative analysis of the population of observed excited states in the residual $^{33}$Mg, the nature of these states can be deciphered. In addition, the long-standing controversy about the parity of the $^{33}$Mg ground state is resolved using momentum distribution analysis, showing a clear signature for negative parity. Partial cross section measurements are compared with the results of eikonal reaction theory combined with large-scale shell model calculations of this complex nucleus located in the island of inversion, where configuration mixing plays a major role.

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D. Bazin, N. Aoi, H. Baba, J. Chen, H. Crawford, P. Doornenbal, P. Fallon, K. Li, J. Lee, M. Matsushita, T. Motobayashi, H. Sakurai, H. Scheit, D. Steppenbeck, R. Stroberg, S. Takeuchi, H. Wang, K. Yoneda, C. X. Yuan. 2021-01-28. Spectroscopy of $^{33}$Mg with knockout reactions. https://doi.org/10.1103/physrevc.103.064318

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