Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus Bi-185
文献类型：期刊论文
| 作者 | Doherty, D. T.4,5; Andreyev, A. N.3,4; Seweryniak, D.2; Woods, P. J.1; Carpenter, M. P.2; Auranen, K.2,8; Ayangeakaa, A. D.2,11,12; Back, B. B.2; Bottoni, S.2,6,7; Canete, L.5 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2021-11-12 |
| 卷号 | 127期号:20页码:6 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.127.202501 |
| 通讯作者 | Doherty, D. T.() |
| 英文摘要 | Two long-standing puzzles in the decay of Bi-185, the heaviest known proton-emitting nucleus are revisited. These are the nonobservation of the 9/2(-) state, which is the ground state of all heavier odd-A Bi isotopes, and the hindered nature of proton and alpha decays of its presumed 60-mu s 1/2(+) ground state. The Bi-185 nucleus has now been studied with the Mo-95(Nb-93, 3n) reaction in complementary experiments using the Fragment Mass Analyzer and Argonne Gas-Filled Analyzer at Argonne National Laboratory's ATLAS facility. The experiments have established the existence of two states in Bi-185; the short-lived T-1/2 = 2.8(-1.0)(+2.3) mu s, proton- and alpha-decaying ground state, and a 58(2)-mu s gamma-decaying isomer, the half-life of which was previously attributed to the ground state. The reassignment of the ground-state lifetime results in a proton-decay spectroscopic factor close to unity and represents the only known example of a ground-state proton decay to a daughter nucleus (Pb-184) with a major shell closure. The data also demonstrate that the ordering of low- and high-spin states in Bi-185 is reversed relative to the heavier odd-A Bi isotopes, with the intruder-based 1/2(+) configuration becoming the ground, similar to the lightest At nuclides. |
| WOS关键词 | ALPHA-DECAY ; ISOTOPES ; STATES ; BI ; SPECTROSCOPY ; TL |
| 资助项目 | U.S. Department of Energy, Office of Nuclear Physics[DEAC02-06CH11357] ; U.S. Department of Energy, Office of Nuclear Physics[DE-FG02-94ER41041] ; U.S. Department of Energy, Office of Nuclear Physics[DE-FG02-97ER41033] ; STFC |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000719865300004 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | U.S. Department of Energy, Office of Nuclear Physics ; STFC |
| 源URL | [http://119.78.100.186/handle/113462/139957]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Doherty, D. T. |
| 作者单位 | 1.Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland 2.Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA 3.Japan Atom Energy Agcy, Adv Sci Res Ctr, Ibaraki 3191195, Japan 4.Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England 5.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England 6.INFN, Via Celoria 16, I-20133 Milan, Italy 7.Univ Milan, Via Celoria 16, I-20133 Milan, Italy 8.Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland 9.Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA 10.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Doherty, D. T.,Andreyev, A. N.,Seweryniak, D.,et al. Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus Bi-185[J]. PHYSICAL REVIEW LETTERS,2021,127(20):6. |
| APA | Doherty, D. T..,Andreyev, A. N..,Seweryniak, D..,Woods, P. J..,Carpenter, M. P..,...&Zhu, S..(2021).Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus Bi-185.PHYSICAL REVIEW LETTERS,127(20),6. |
| MLA | Doherty, D. T.,et al."Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus Bi-185".PHYSICAL REVIEW LETTERS 127.20(2021):6. |
入库方式： OAI收割
来源：近代物理研究所
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