Determination of the astrophysical N-12(p,gamma)O-13 reaction rate from the H-2(N-12,O-13)n reaction and its astrophysical implications
文献类型：期刊论文
| 作者 | Li, Z. H.3; Guo, B.3; Bai, X. X.3; Han, Y. L.3; Shu, N. C.3; Li, Y. J.3; Yan, S. Q.3; Wang, Y. B.3; Su, J.3; Li, Z. H.4,5 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2013-01-17 |
| 卷号 | 87 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.87.015803 |
| 文献子类 | Article |
| 英文摘要 | The evolution of massive stars with very low-metallicities depends critically on the amount of CNO nuclides which they produce. The N-12(p, gamma)O-13 reaction is an important branching point in the rap processes, which are believed to be alternative paths to the slow 3 alpha process for producing CNO seed nuclei and thus could change the fate of massive stars. In the present work, the angular distribution of the H-2(N-12, O-13)n proton transfer reaction at E-c.m. = 8.4 MeV has been measured for the first time. Based on the Johnson-Soper approach, the square of the asymptotic normalization coefficient (ANC) for the virtual decay of O-13(g.s.) -> N-12 + p was extracted to be 3.92 +/- 1.47 fm(-1) from the measured angular distribution and utilized to compute the direct component in the N-12(p, gamma)O-13 reaction. The direct astrophysical S factor at zero energy was then found to be 0.39 +/- 0.15 keV b. By considering the direct capture into the ground state of O-13, the resonant capture via the first excited state of O-13 and their interference, we determined the total astrophysical S factors and rates of the N-12(p, gamma)O-13 reaction. The new rate is two orders of magnitude slower than that from the REACLIB compilation. Our reaction network calculations with the present rate imply that N-12(p, gamma)O-13 will only compete successfully with the beta(+) decay of N-12 at higher (similar to 2 orders of magnitude) densities than initially predicted. DOI: 10.1103/PhysRevC.87.015803 |
| WOS关键词 | ASYMPTOTIC NORMALIZATION COEFFICIENTS ; CAPTURE REACTION ; BEAM PRODUCTION ; POPULATION-III ; SEPARATOR CRIB ; S-FACTOR ; STARS ; B-8(P |
| 资助项目 | KAKEHI of Japan[21340053] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000313751800003 |
| 源URL | [http://119.78.100.186/handle/113462/48499]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Liu, W. P. |
| 作者单位 | 1.Univ Tokyo, CNS, Wako Branch, Wako, Saitama 3510198, Japan 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.China Inst Atom Energy, Beijing 102413, Peoples R China 4.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 5.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 6.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan |
| 推荐引用方式 GB/T 7714 | Li, Z. H.,Guo, B.,Bai, X. X.,et al. Determination of the astrophysical N-12(p,gamma)O-13 reaction rate from the H-2(N-12,O-13)n reaction and its astrophysical implications[J]. PHYSICAL REVIEW C,2013,87. |
| APA | Li, Z. H..,Guo, B..,Bai, X. X..,Han, Y. L..,Shu, N. C..,...&Chen, Y. S..(2013).Determination of the astrophysical N-12(p,gamma)O-13 reaction rate from the H-2(N-12,O-13)n reaction and its astrophysical implications.PHYSICAL REVIEW C,87. |
| MLA | Li, Z. H.,et al."Determination of the astrophysical N-12(p,gamma)O-13 reaction rate from the H-2(N-12,O-13)n reaction and its astrophysical implications".PHYSICAL REVIEW C 87(2013). |
入库方式： OAI收割
来源：近代物理研究所
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