| Deep Underground Laboratory Measurement of C 13 (α,n) O 16 in the Gamow Windows of the s and i Processes | |
| 2022-09-23 | |
| Source Publication | Physical Review Letters
 |
| ISSN | 0031-9007 |
| Volume | 129Issue:13 |
| Abstract | The C13(α,n)O16 reaction is the main neutron source for the slow-neutron-capture process in asymptotic giant branch stars and for the intermediate process. Direct measurements at astrophysical energies in above-ground laboratories are hindered by the extremely small cross sections and vast cosmic-ray-induced background. We performed the first consistent direct measurement in the range of Ec.m.=0.24 to 1.9 MeV using the accelerators at the China Jinping Underground Laboratory and Sichuan University. Our measurement covers almost the entire intermediate process Gamow window in which the large uncertainty of the previous experiments has been reduced from 60% down to 15%, eliminates the large systematic uncertainty in the extrapolation arising from the inconsistency of existing datasets, and provides a more reliable reaction rate for the studies of the slow-neutron-capture and intermediate processes along with the first direct determination of the alpha strength for the near-threshold state. © 2022 American Physical Society. |
| Keyword | Cosmic rays Cosmology Large dataset Neutrons Reaction intermediates Stars Uncertainty analysis Above grounds Astrophysical energies Asymptotic giant branch stars Direct measurement Jinping Laboratory measurements Measurements of Neutron-capture process Slow neutrons Underground laboratory |
| Publisher | American Physical Society |
| DOI | 10.1103/PhysRevLett.129.132701 |
| Indexed By | EI |
| Language | 英语 |
| EI Accession Number | 20224012816536 |
| EI Keywords | Neutron sources |
| EI Classification Number | 657 Space Physics ; 657.2 Extraterrestrial Physics and Stellar Phenomena ; 723.2 Data Processing and Image Processing ; 804 Chemical Products Generally ; 922.1 Probability Theory |
| Original Document Type | Journal article (JA) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/485834 |
| Collection | 兰州大学 |
| Corresponding Author | Tang, X.D.; Liu, W.P. |
| Affiliation | 1.Joint Department for Nuclear Physics, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou University, Lanzhou; 730000, China; 2.CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou; 73000, China; 3.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing; 100049, China; 4.Key Laboratory of Radiation Physics and Technology, The Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu; 610064, China; 5.Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong; 519082, China; 6.School of Nuclear Science and Technology, Lanzhou University, Lanzhou; 730000, China; 7.China Institute of Atomic Energy, Beijing; 102413, China; 8.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou; 730000, China; 9.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai; 264209, China; 10.Key Laboratory of Beam Technology and Material Modification, Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing; 100875, China; 11.College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; 12.Yalong River Hydropower Development Company, Chengdu; 610051, China; 13.RIKEN Nishina Center, Wako, Saitama; 351-0198, Japan; 14.Department of Physics, The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame; IN; 46556, United States; 15.Center for Nuclear Study, University of Tokyo, Wako, Saitama; 351-0198, Japan; 16.Wolfson Fellow of Royal Society, School of Physics and Astronomy, University of Edinburgh, King's Buildings, Edinburgh; EH9 3FD, United Kingdom; 17.Konkoly Observatory, Research Centre for Astronomy and Earth Sciences (CSFK), Eötvös Loránd Research Network (ELKH), Konkoly Thege Miklós út 15-17, Budapest; H-1121, Hungary; 18.CSFK, MTA Centre of Excellence, Budapest, Konkoly Thege Miklós út 15-17, Budapest; H-1121, Hungary; 19.E. A. Milne Centre for Astrophysics, Department of Physics and Mathematics, University of Hull, Hull; HU6 7RX, United Kingdom |
| First Author Affilication | School of Nuclear Science and Technology |
| Corresponding Author Affilication | School of Nuclear Science and Technology |
| Recommended Citation GB/T 7714 | Gao, B.,Jiao, T.Y.,Li, Y.T.,et al. Deep Underground Laboratory Measurement of C 13 (α,n) O 16 in the Gamow Windows of the s and i Processes[J]. Physical Review Letters,2022,129(13). |
| APA | Gao, B..,Jiao, T.Y..,Li, Y.T..,Chen, H..,Lin, W.P..,...&Pignatari, M..(2022).Deep Underground Laboratory Measurement of C 13 (α,n) O 16 in the Gamow Windows of the s and i Processes.Physical Review Letters,129(13). |
| MLA | Gao, B.,et al."Deep Underground Laboratory Measurement of C 13 (α,n) O 16 in the Gamow Windows of the s and i Processes".Physical Review Letters 129.13(2022). |
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