期刊
PHYSICAL REVIEW C
卷 81, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.81.014306
关键词
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资金
- Academy of Finland [44875, 213503]
- Swedish Research Council
- Goran Gustafsson Foundation
- EU [HPRI-CT-1999-00044]
- EXOTAG [HPRI-1999-CT-50017]
- UK Engineering and Physical Sciences Research Council and Science
- Technology Facilities Council [209430, 121110, 111965]
- Slovak Research and Development Agency [APVV-20-006205]
- STFC [ST/F012039/1, EP/C015266/1, ST/G008671/1] Funding Source: UKRI
- Science and Technology Facilities Council [EP/C543157/1, ST/G008671/1, ST/G008620/1, EP/C015371/1, ST/F012039/1, EP/C015266/1] Funding Source: researchfish
Decay paths, half-lives, and excitation energies of the i(13/2) bandheads of the neutron-deficient nuclei Pt-171, Os-167, and W-163 have been established for the first time. Gamma-ray transitions, X-rays, and internal conversion electrons have been observed, allowing internal-conversion coefficients to be measured and B(M2) reduced transition probabilities to be extracted. These results elucidate the low-lying single-quasiparticle structures and give the energy level spacings between the nu f(7/2), nu h(9/2), and nu i(13/2) quasineutron states for all three nuclei. Moreover, ground-state spin assignments have been made for the first time, along with the measurement of the alpha-decay branching ratio for Pt-171. The decay paths of the i(13/2) bandheads were followed by favored alpha decays, indicating that all three nuclei have the same I-pi = 7/2(-) ground state.
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