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Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory | |
An, ZD; Chen, ZP; Ma, YG; Yu, JK; Sun, YY; Fan, GT; Li, YJ; Xu, HH; Huang, BS; Wang, K; Chen, ZP (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. | |
2015 | |
Source Publication | PHYSICAL REVIEW C |
ISSN | 0556-2813 |
Volume | 92Issue:4Pages:— |
Subtype | 期刊文献 |
Abstract | Determination of the accurate astrophysical S factor of C-12(alpha,gamma) O-16 reaction has been regarded as the holy grail of nuclear astrophysics for decades. In current stellar models, a knowledge of that value to better than 10% is desirable. Due to the practical issues, tremendous experimental and theoretical efforts over nearly 50 years are not able to reach this goal, and the published values contradicted with each other strongly and their uncertainties are two times larger than the required precision. To this end we have developed a reduced R-matrix theory based on the classical R-matrix theory of Lane and Thomas, which treats primary transitions to the ground state and four bound states as the independent reaction channels in the channel spin representation. With the coordination of covariance statistics and error-propagation theory, a global fitting for almost all available experimental data of O-16 system has been multi-iteratively analyzed by our powerful code. A reliable, accurate, and self-consistent astrophysical S factor of C-12(alpha,gamma) O-16 was obtained with a recommended value S-tot(0.3 MeV) = 162.7 +/- 7.3 keV b (4.5%) which could meet the required precision. |
Keyword | Cross-section Standards Energy-levels Stellar Energies Triple-alpha Gamma)O-16 Vicinity Capture C-12 Nuclei Rates |
Indexed By | SCI |
Language | 英语 |
WOS ID | WOS:000362438900003 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.sinap.ac.cn/handle/331007/24869 |
Collection | 中科院上海应用物理研究所2011-2020年 |
Corresponding Author | Chen, ZP (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. |
Recommended Citation GB/T 7714 | An, ZD,Chen, ZP,Ma, YG,et al. Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory[J]. PHYSICAL REVIEW C,2015,92(4):—. |
APA | An, ZD.,Chen, ZP.,Ma, YG.,Yu, JK.,Sun, YY.,...&Chen, ZP .(2015).Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory.PHYSICAL REVIEW C,92(4),—. |
MLA | An, ZD,et al."Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory".PHYSICAL REVIEW C 92.4(2015):—. |
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