1. Competing particle���hole excitations in �����Na: Constraining state-of-the-art effective interactions
- Author
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Petri, Marina, Fallon, Paul, Macchiavelli, Augusto O., Heil, Sebastian, Rodriguez-Vieitez, Elena, Bazin, Daniel, Campbell, Christopher M., Clark, Randall M., Cromaz, Mario, Gade, Alexandra, Glasmacher, Thomas, Lee, I. Yang, Malbrunot-Ettenauer, S., Paschalis, Stefanos, Ratkiewicz, Andrew, Terry, John R., Weisshaar, Dirk, and Wiedeking, Mathis
- Subjects
Nuclear Theory ,Nuclear Experiment - Abstract
The odd���odd nucleus �����Na is studied via a one-proton, one-proton���one-neutron and one-neutron removal reaction using an intermediate-energy ����Mg, ����Mg and ����Na radioactive ion beam, respectively. Combining high-resolution ��-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle���hole configurations. Negative-parity states in �����Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd���pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.
- Published
- 2022
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