Modified astrophysical S-factor of C-12+C-12 fusion reaction at sub-barrier energies
文献类型：期刊论文
| 作者 | Li, Y. J.5; Fang, X.1,5 ; Bucher, B.2; Li, K. A.3,4; Ru, L. H.3,4; Tang, X. D.3,4
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| 刊名 | CHINESE PHYSICS C
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| 出版日期 | 2020-11-01 |
| 卷号 | 44期号:11页码:19 |
| 关键词 | carbon burning C-12+C-12 fusion statistical model quasi-molecular resonance astrophysical S-factor reaction rate stellar evolution |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/abae56 |
| 通讯作者 | Fang, X.(fangx26@mail.sysu.edu.cn) |
| 英文摘要 | The C-12+C-12 fusion reaction plays a crucial role in stellar evolution and explosions. Its main open reaction channels include alpha, p, n, and Be-8. Despite more than a half century of efforts, large differences remain among the experimental data of this reaction measured using various techniques. In this work, we analyze the existing data using a statistical model. Our calculation shows the following: 1) the relative systematic uncertainties of the predicted branching ratios decrease as the predicted ratios increase; 2) the total modified astrophysical S-factors (S* factors) of the p and channels can be obtained by summing the S* factors of their corresponding ground-state transitions and the characteristic gamma rays, while taking into account the contributions of the missing channels to the latter. After applying corrections based on branching ratios predicted by the statistical model, an agreement is achieved among the different data sets at E-cm > 4 MeV, while some discrepancies remain at lower energies, suggesting the need for better measurements in the near future. We find that the S* factor recently obtained from an indirect measurement is inconsistent with the direct measurement value at energies below 2.6 MeV. We recommend upper and lower limits for the C-12+C-12 S* factor based on the existing models. A new C-12+C-12 reaction rate is also recommended. |
| WOS关键词 | CROSS-SECTIONS ; C-12&C-12 |
| 资助项目 | National Key Research and Development Program of China[2016YFA0400501] ; National Natural Science Foundation of China[11805291] ; National Natural Science Foundation of China[11575292] ; National Natural Science Foundation of China[11475228] ; National Natural Science Foundation of China[11490564] ; National Natural Science Foundation of China[11875329] ; U.S. Department of Energy[DE-AC07-05ID14517] ; Fundamental Research Funds for the Central Universities[18lgpy84] ; Continuous Basic Scientific Research Project[WDJC-2019-13] ; CNNC RD program[FA18000201] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34000000] ; Hundred Talents Program of the Chinese Academy of Sciences |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000582821200001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; U.S. Department of Energy ; Fundamental Research Funds for the Central Universities ; Continuous Basic Scientific Research Project ; CNNC RD program ; Strategic Priority Research Program of Chinese Academy of Sciences ; Hundred Talents Program of the Chinese Academy of Sciences |
| 源URL | [http://119.78.100.186/handle/113462/139512]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Fang, X. |
| 作者单位 | 1.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China 2.Idaho Natl Lab, Idaho Falls, ID 83415 USA 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 4.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 5.China Inst Atom Energy, Beijing 102413, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Y. J.,Fang, X.,Bucher, B.,et al. Modified astrophysical S-factor of C-12+C-12 fusion reaction at sub-barrier energies[J]. CHINESE PHYSICS C,2020,44(11):19. |
| APA | Li, Y. J.,Fang, X.,Bucher, B.,Li, K. A.,Ru, L. H.,&Tang, X. D..(2020).Modified astrophysical S-factor of C-12+C-12 fusion reaction at sub-barrier energies.CHINESE PHYSICS C,44(11),19. |
| MLA | Li, Y. J.,et al."Modified astrophysical S-factor of C-12+C-12 fusion reaction at sub-barrier energies".CHINESE PHYSICS C 44.11(2020):19. |
入库方式： OAI收割
来源：近代物理研究所
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