Spectroscopy of Mg33 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, and C. X. Yuan
Phys. Rev. C 103, 064318 – Published 15 June 2021
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  • INTRODUCTION
  • EXPERIMENT
  • RESULTS
  • DISCUSSION
  • CONCLUSION
  • ACKNOWLEDGMENTS
    • References

    Abstract

    The structure of Mg33 was investigated by means of two knockout reactions, one-neutron removal from Mg34 and one-proton removal from Al34. Using comparative analysis of the population of observed excited states in the residual Mg33, the nature of these states can be deciphered. In addition, the long-standing controversy about the parity of the Mg33 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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    • Received 28 January 2021
    • Accepted 18 May 2021

    DOI:https://doi.org/10.1103/PhysRevC.103.064318

    ©2021 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Breakup reactionsDirect reactionsNuclear reactionsNuclear structure & decaysShell modelSpectroscopic factors & electromagnetic momentsTransfer reactions
    1. Properties
    20 ≤ A ≤ 38
    Nuclear Physics

    Authors & Affiliations

    D. Bazin1,2,*, N. Aoi3,4, H. Baba3, J. Chen1, H. Crawford5, P. Doornenbal3, P. Fallon5, K. Li3, J. Lee3,6, M. Matsushita3, T. Motobayashi3, H. Sakurai3,7, H. Scheit3,8, D. Steppenbeck3, R. Stroberg9, S. Takeuchi3, H. Wang3, K. Yoneda3, and C. X. Yuan10

    • 1National Superconducting Cyclotron Laboratory, 640 S. Shaw Lane, East Lansing, Michigan 48824-1321, USA
    • 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321, USA
    • 3RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
    • 4Research Center for Nuclear Physics, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
    • 5Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
    • 6Department of Physics, University of Hong Kong, Pokfulam Road, 999077 Hong Kong, China
    • 7Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
    • 8Technische Universität Darmstadt, Darmstadt 64289, Germany
    • 9Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
    • 10Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China

    • *bazin@nscl.msu.edu

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    Vol. 103, Iss. 6 — June 2021

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