Core excitation in <sup>92</sup>Mo up to high spin
Abstract An in-beam gamma-ray spectroscopy study of the even–even nucleus 92 Mo has been carried out using the 30 Si + 65 Cu, 18 O + 80 Se reactions at beam energies of 120 and 99 MeV, respectively. Angular distribution from the oriented state ratio ( R ADO ) and linear polarization (Δ asym ) measurements have fixed most of the tentatively assigned spin-parity of the high-energy levels. A large-scale shell-model calculation using the GWBXG interaction has been carried out to understand the configuration and structure of both positive and negative parity states up to the highest observed spin. The high-spin states primarily originate from the coupling of excited proton- and neutron-core structures in an almost stretched manner. The systematics of the energy required to form a neutron particle-hole pair excitation, ν g 9/2 → ν d 5/2 , is discussed. The lifetimes of a few high-spin states have been measured using the Doppler shift attenuation method. Additionally, a qualitative argument is proposed to explain the comparatively strong E1 transition feeding the 7310.9 keV level.
Authors
- R. Palit (ORCID: https://orcid.org/0000-0001-9564-5431)
- Biswajit Das (ORCID: https://orcid.org/0000-0003-0746-5305)
- Somnath Nag (ORCID: https://orcid.org/0000-0002-0477-9061)
- P. Dey (ORCID: https://orcid.org/0000-0002-4380-1073)
- D. Negi (ORCID: https://orcid.org/0000-0003-3513-1177)
- Ananya Kundu (ORCID: https://orcid.org/0000-0002-4036-949X)
- U. Garg (ORCID: https://orcid.org/0000-0001-8751-4204)
- P. C. Srivastava (ORCID: https://orcid.org/0000-0001-8719-1548)
- R. Raut (ORCID: https://orcid.org/0000-0002-0335-1813)
- A. Sindhu (ORCID: https://orcid.org/0009-0008-9531-2053)
- Nidhi Goel (ORCID: https://orcid.org/0000-0002-8047-2352)
- Deepak Patel (ORCID: https://orcid.org/0000-0002-7669-1907)
- Vishal Malik (ORCID: https://orcid.org/0009-0000-6756-4335)
Institutions
- University of Notre Dame (US)
- Tata Institute of Fundamental Research (IN)
- Indian Institute of Technology Roorkee (IN)
- Manipal Academy of Higher Education (IN)
- University of California, San Francisco (US)
- University of California System (US)
- UGC DAE Consortium for Scientific Research (IN)
- UGC-DAE Consortium for Scientific Research, Kolkata Centre
- Indian Institute of Technology BHU (IN)
- Banaras Hindu University (IN)
Publication Details
- Journal
- Journal of Physics G Nuclear and Particle Physics
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1088/1361-6471/ad9343
- Citations
- 2
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 1.32
Funders
- Department of Atomic Energy, Government of India