Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts
文献类型：期刊论文
| 作者 | Hu, J ; He, JJ ; Parikh, A ; Xu, SW ; Yamaguchi, H ; Kahl, D ; Ma, P ; Su, J ; Wang, HW ; Nakao, T ; Wakabayashi, Y ; Teranishi, T ; Hahn, KI ; Moon, JY ; Jung, HS ; Hashimoto, T ; Chen, AA ; Irvine, D ; Lee, CS ; Kubono, S |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:2 |
| 关键词 | ASTROPHYSICAL REACTION-RATES ACCRETING NEUTRON-STARS SHORT-LIVED NUCLEI HOT CNO CYCLE RESONANCE SCATTERING ELASTIC-SCATTERING STELLAR REACTIONS SEPARATOR CRIB RP-PROCESS NUCLEOSYNTHESIS |
| ISSN号 | 0556-2813 |
| 通讯作者 | jianjunhe@impcas.ac.cn ; anuj.r.parikh@upc.edu |
| 英文摘要 | The O-14(alpha, p)F-17 reaction is one of the key reactions involved in the breakout from the hot-CNO cycle to the rp-process in type-I x-ray bursts (XRBs). The resonant properties in the compound nucleus Ne-18 have been investigated through resonant elastic scattering of F-17 + p. The radioactive F-17 beam was separated by the Center for Nuclear Study radioactive ion beam separator (CRIB) and bombarded a thick H-2 gas target at 3.6 MeV/nucleon. The recoiling light particles were measured by three Delta E-E silicon telescopes at laboratory angles of theta(lab) approximate to 3 degrees, 10 degrees, and 18 degrees. Five resonances at E-x = 6.15, 6.28, 6.35, 6.85, and 7.05 MeV were observed in the excitation functions, and their spin-parities have been determined based on an R-matrix analysis. In particular, J(pi) = 1(-) was firmly assigned to the 6.15-MeV state which dominates the thermonuclear O-14(alpha, p)F-17 rate below 2 GK. As well, a possible new excited state in Ne-18 was observed at E-x = 6.85 +/- 0.11 MeV with tentative J = 0 assignment. This state could be the analog state of the 6.880 MeV (0(-)) level in the mirror nucleus O-18, or a bandhead state (0(+)) of the six-particle four-hole (6p-4h) band. A new thermonuclear O-14(alpha, p)F-17 rate has been determined, and the astrophysical impact of multiple recent rates has been examined using an XRB model. Contrary to previous expectations, we find only a modest impact on predicted nuclear energy generation rates from using reaction rates differing by up to several orders of magnitude. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000341240300005 |
| 公开日期 | 2015-03-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/14127]  |
| 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 | Hu, J,He, JJ,Parikh, A,et al. Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts[J]. PHYSICAL REVIEW C,2014,90(2). |
| APA | Hu, J.,He, JJ.,Parikh, A.,Xu, SW.,Yamaguchi, H.,...&Kubono, S.(2014).Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts.PHYSICAL REVIEW C,90(2). |
| MLA | Hu, J,et al."Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts".PHYSICAL REVIEW C 90.2(2014). |
入库方式： OAI收割
来源：上海应用物理研究所
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