The “puzzle” reexamined
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
- Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy, National Superconducting Cyclotron Lab.
- Autonomous Univ. of Madrid (Spain). Dept. of Theoretical Physics
Background: Competing interpretations of the results of a Mg30(t,p)Mg32 measurement populating the ground state and 0$$+\atop{2}$$ state in Mg32, both limited to a two-state mixing description, have left an open question regarding the nature of the Mg32 ground state. Purpose: Inspired by recent shell-model calculations, we explore the possibility of a consistent interpretation of the available data for the low-lying 0+ states in Mg32 by expanding the description from two-level to three-level mixing. Methods: A phenomenological three-level mixing model of unperturbed 0p0h, 2p2h, and 4p4h states is applied to describe both the excitation energies in Mg32 and the transfer reaction cross sections. Results: Within this approach, self-consistent solutions exist that provide good agreement with the available experimental information obtained from the Mg30(t,p)Mg32 reaction. Conclusion: The inclusion of the third state, namely the 4p4h configuration, resolves the "puzzle" that results from a two-levelmodel interpretation of the same data. In our analysis, the Mg32 ground state emerges naturally as dominated by intruder (2p2h and 4p4h) configurations, at the 95% level.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-05CH11231; PHY-1404442
- OSTI ID:
- 1379587
- Alternate ID(s):
- OSTI ID: 1332777
- Journal Information:
- Physical Review C, Vol. 94, Issue 5; ISSN 2469-9985
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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