Observation of a new isomer in <sup>185</sup>Au*
Abstract Delayed γ -ray spectroscopy of 185 Au was studied at the Argonne Gas-Filled Analyzer. A new isomer at an excitation energy of 1504.2(4) keV with a half-life of 630(80) ns was identified via γ - γ coincidence analysis, decaying via a 294.8(3) keV transition. Based on Weisskopf estimates, the multipolarity of the 295 keV transition is assigned to be E 1, M 1, E 2, or M 2. Possible configurations for this new isomer are discussed based on configuration-constrained potential energy surface calculations.
Authors
- W. Q. Zhang (ORCID: https://orcid.org/0000-0001-8261-3908)
- Andrei Andreyev
- C. F. Jiao (ORCID: https://orcid.org/0000-0002-5292-5158)
- Zhong Liu (ORCID: https://orcid.org/0000-0003-4096-3170)
- Fu Xiangyu
Institutions
- Japan Atomic Energy Agency (JP)
- Louisiana State University (US)
- Argonne National Laboratory (US)
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Johannes Gutenberg University Mainz (DE)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- University of Surrey (GB)
- Helmholtz Institute Mainz (DE)
- CEA Paris-Saclay (FR)
- Petersburg Nuclear Physics Institute (RU)
- Advanced Science Research Center (JP)
- University of York (GB)
- Comenius University Bratislava (SK)
- University of Edinburgh (GB)
- KU Leuven (BE)
Publication Details
- Journal
- Chinese Physics C
- Published
- 2025-05-10
- DOI
- https://doi.org/10.1088/1674-1137/add70c
- Citations
- 2
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 3.74
Funders
- National Natural Science Foundation of China