The Ne-18(alpha, p)Na-21 breakout reaction in x-ray bursts: Experimental determination of spin-parities for a resonances in Mg-22 via resonant elastic scattering of Na-21 + p
文献类型：期刊论文
| 作者 | He, J. J. ; Zhang, L. Y. ; Parikh, A. ; Xu, S. W. ; Yamaguchi, H. ; Kahl, D. ; Kubono, S. ; Hu, J. ; Ma, P. ; Chen, S. Z. ; Wakabayashi, Y. ; Sun, B. H. ; Wang, H. W. ; Tian, W. D. ; Chen, R. F. ; Guo, B. ; Hashimoto, T. ; Togano, Y. ; Hayakawa, S. ; Teranishi, T. ; Iwasa, N. ; Yamada, T. ; Komatsubara, T. |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:1 |
| ISSN号 | 0556-2813 |
| 英文摘要 | The 18Ne(alpha, p)Na-21 reaction provides a pathway for breakout from the hot CNO cycles to the rp process in type-l x-ray bursts. To better determine this astrophysical reaction rate, the resonance parameters of the compound nucleus Mg-22 have been investigated by measuring the resonant elastic scattering of Na-21 + p. An 89 MeV Na-21 radioactive ion beam was produced at the CNS Radioactive Ion Beam Separator and bombarded an 8.8 mg/cm(2) thick polyethylene target. The recoiled protons were measured at scattering angles of theta(c.m.) approximate to 175 degrees and 152 degrees by three Delta E-E silicon telescopes. The excitation function was obtained with a thick-target method over energies Ex (Mg-22) = 5.5-9.2 MeV. The resonance parameters have been determined through an R-matrix analysis. For the first time, the J(pi) values for ten states above the a threshold in Mg-22 have been experimentally determined in a single consistent measurement. We have made three new J(pi) assignments and confirmed seven of the ten tentative assignments in the previous work. The Ne-18(alpha, p)Na-21 reaction rate has been recalculated, and the astrophysical impact of our new rate has been investigated through one-zone postprocessing x-ray burst calculations. We find that the Ne-18(alpha, p)Na-21 rate significantly affects the peak nuclear energy generation rate and the onset temperature of this breakout reaction in these phenomena. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322576400003 |
| 公开日期 | 2014-06-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13959]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | He, J. J.,Zhang, L. Y.,Parikh, A.,et al. The Ne-18(alpha, p)Na-21 breakout reaction in x-ray bursts: Experimental determination of spin-parities for a resonances in Mg-22 via resonant elastic scattering of Na-21 + p[J]. PHYSICAL REVIEW C,2013,88(1). |
| APA | He, J. J..,Zhang, L. Y..,Parikh, A..,Xu, S. W..,Yamaguchi, H..,...&Komatsubara, T..(2013).The Ne-18(alpha, p)Na-21 breakout reaction in x-ray bursts: Experimental determination of spin-parities for a resonances in Mg-22 via resonant elastic scattering of Na-21 + p.PHYSICAL REVIEW C,88(1). |
| MLA | He, J. J.,et al."The Ne-18(alpha, p)Na-21 breakout reaction in x-ray bursts: Experimental determination of spin-parities for a resonances in Mg-22 via resonant elastic scattering of Na-21 + p".PHYSICAL REVIEW C 88.1(2013). |
入库方式： OAI收割
来源：上海应用物理研究所
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