The 59Fe (n,γ) 60Fe Cross Section from the Surrogate Ratio Method and Its Effect on the 60Fe Nucleosynthesis
文献类型：期刊论文
| 作者 | Yan,S. Q.1; Li,X. Y.1; Nishio,K.2; Lugaro,M.3,4,5; Li,Z. H.1,8; Makii,H.2; Pignatari,M.3,11,12; Wang,Y. B.1; Orlandi,R.2; Hirose,K.2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-09-28 |
| 卷号 | 919期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Nuclear physics Stellar nucleosynthesis Massive stars |
| DOI | 10.3847/1538-4357/ac12ce |
| 通讯作者 | Yan,S. Q.() |
| 英文摘要 | Abstract The long-lived 60Fe (with a half-life of 2.62 Myr) is a crucial diagnostic of active nucleosynthesis in the Milky Way galaxy and in supernovae near the solar system. The neutron-capture reaction 59Fe(n,γ)60Fe on 59Fe (half-life = 44.5 days) is the key reaction for the production of 60Fe in massive stars. This reaction cross section has been previously constrained by the Coulomb dissociation experiment, which offered partial constraint on the E1 γ-ray strength function but a negligible constraint on the M1 and E2 components. In this work, for the first time, we use the surrogate ratio method to experimentally determine the 59Fe(n,γ)60Fe cross sections in which all the components are included. We derived a Maxwellian-averaged cross section of 27.5 ± 3.5 mb at kT = 30 keV and 13.4 ± 1.7 mb at kT = 90 keV, roughly 10%–20% higher than previous estimates. We analyzed the impact of our new reaction rates in nucleosynthesis models of massive stars and found that uncertainties in the production of 60Fe from the 59Fe(n,γ)60Fe rate are at most 25%. We conclude that stellar physics uncertainties now play a major role in the accurate evaluation of the stellar production of 60Fe. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-919-2-AC12CE |
| 源URL | [http://119.78.100.186/handle/113462/136556]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yan,S. Q. |
| 作者单位 | 1.China Institute of Atomic Energy, P. O. Box 275(10), Beijing 102413, People’s Republic of China; panyu@ciae.ac.cn; wpliu@ciae.ac.cn 2.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan 3.Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, E?tv?s Loránd Research Network (ELKH), Konkoly Thege Miklós út 15-17, 1121 Budapest, Hungary; maria.lugaro@csfk.org 4.ELTE E?tv?s Loránd University, Institute of Physics, Budapest 1117, Pázmány Péter sétány 1/A, Hungary 5.School of Physics and Astronomy, Monash University, VIC 3800, Australia 6.Institute for Nuclear Research (ATOMKI), H-4001 Debrecen, Hungary 7.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China 8.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100080, People’s Republic of China 9.School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of China 10.Beijing Normal University, Beijing 100875, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Yan,S. Q.,Li,X. Y.,Nishio,K.,et al. The 59Fe (n,γ) 60Fe Cross Section from the Surrogate Ratio Method and Its Effect on the 60Fe Nucleosynthesis[J]. The Astrophysical Journal,2021,919(2). |
| APA | Yan,S. Q..,Li,X. Y..,Nishio,K..,Lugaro,M..,Li,Z. H..,...&Liu,W. P..(2021).The 59Fe (n,γ) 60Fe Cross Section from the Surrogate Ratio Method and Its Effect on the 60Fe Nucleosynthesis.The Astrophysical Journal,919(2). |
| MLA | Yan,S. Q.,et al."The 59Fe (n,γ) 60Fe Cross Section from the Surrogate Ratio Method and Its Effect on the 60Fe Nucleosynthesis".The Astrophysical Journal 919.2(2021). |
入库方式： OAI收割
来源：近代物理研究所
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