New Fe-59 Stellar Decay Rate with Implications for the Fe-60 Radioactivity in Massive Stars
文献类型：期刊论文
| 作者 | Gao, B.9,10 ; Giraud, S.1; Li, K. A.9,10; Sieverding, A.8; Zegers, R. G. T.1,6,7; Tang, X.9,10; Ash, J.1,6; Ayyad-Limonge, Y.1; Bazin, D.1,6; Biswas, S.1
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2021-04-12 |
| 卷号 | 126期号:15页码:6 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.126.152701 |
| 通讯作者 | Gao, B.(gaobsh@impcas.ac.cn) ; Li, K. A.(lika@impcas.ac.cn) |
| 英文摘要 | The discrepancy between observations from gamma-ray astronomy of the Fe-60/Al-26 gamma-ray flux ratio and recent calculations is an unresolved puzzle in nuclear astrophysics. The stellar beta-decay rate of Fe-59 is one of the major nuclear uncertainties impeding us from a precise prediction. The important Gamow-Teller strengths from the low-lying states in Fe-59 to the Co-59 ground state are measured for the first time using the exclusive measurement of the Co-59(t, He-3 + gamma) Fe-59 charge-exchange reaction. The new stellar decay rate of Fe-59 is a factor of 3.5 +/- 1.1 larger than the currently adopted rate at T = 1.2 GK. Stellar evolution calculations show that the Fe-60 production yield of an 18 solar mass star is decreased significantly by 40% when using the new rate. Our result eliminates one of the major nuclear uncertainties in the predicted yield of Fe-60 and alleviates the existing discrepancy of the Fe-60/Al-26 ratio. |
| WOS关键词 | SOLAR METALLICITY STARS ; PRE-SUPERNOVA EVOLUTION ; PF-SHELL NUCLEI ; M-CIRCLE-DOT ; NUCLEOSYNTHESIS ; AL-26 ; EXPLOSION ; ISOTOPES |
| 资助项目 | National Key Research and Development program[MOST 2016YFA0400501] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB XDB34020000] ; U.S. Department of Energy, in the Office of Nuclear Physics of the Office of Science ; DOE[DE-SC0019034] ; DOE[DE-AC02-05CH11231] ; U.S.-NSF[PHY-1811855] ; U.S. Department of Energy, Office of Science, Office of Nuclear Physics[DE-SC0020451] ; U.S. Department of Energy[DE-FG02-87ER40328] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000652828100007 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Key Research and Development program ; Strategic Priority Research Program of Chinese Academy of Sciences ; U.S. Department of Energy, in the Office of Nuclear Physics of the Office of Science ; DOE ; U.S.-NSF ; U.S. Department of Energy, Office of Science, Office of Nuclear Physics ; U.S. Department of Energy |
| 源URL | [http://119.78.100.186/handle/113462/137175]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Gao, B.; Li, K. A. |
| 作者单位 | 1.Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA 2.Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China 3.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 4.Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden 5.Monash Univ, Sch Phys & Astron, Melbourne, Vic 3800, Australia 6.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA 7.Michigan State Univ, Joint Inst Nucl Astrophys, Ctr Evolut Elements, E Lansing, MI 48824 USA 8.Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA 9.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 73000, Peoples R China 10.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, B.,Giraud, S.,Li, K. A.,et al. New Fe-59 Stellar Decay Rate with Implications for the Fe-60 Radioactivity in Massive Stars[J]. PHYSICAL REVIEW LETTERS,2021,126(15):6. |
| APA | Gao, B..,Giraud, S..,Li, K. A..,Sieverding, A..,Zegers, R. G. T..,...&Weisshaar, D..(2021).New Fe-59 Stellar Decay Rate with Implications for the Fe-60 Radioactivity in Massive Stars.PHYSICAL REVIEW LETTERS,126(15),6. |
| MLA | Gao, B.,et al."New Fe-59 Stellar Decay Rate with Implications for the Fe-60 Radioactivity in Massive Stars".PHYSICAL REVIEW LETTERS 126.15(2021):6. |
入库方式： OAI收割
来源：近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。