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 | Guo, B.9; Komatsubara, T.11; Yamada, T.6; Iwasa, N.6; Teranishi, T.7; Hayakawa, S.4; Togano, Y.8; Tian, W. D.10; Chen, R. F.12; Hashimoto, T.4 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2013-07-29 |
| 卷号 | 88 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.88.012801 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | ASTROPHYSICAL REACTION-RATES ; RP-PROCESS ; SEPARATOR CRIB ; NEUTRON-STARS ; NUCLEOSYNTHESIS ; STATES ; BEAM ; TARGET ; CYCLE |
| 资助项目 | Spanish MICINN[AYA2010-15685] ; Spanish MICINN[EUI2009-04167] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000322576400003 |
| 源URL | [http://119.78.100.186/handle/113462/48207]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | He, J. J. |
| 作者单位 | 1.Univ Politecn Cataluna, Dept Fis & Engn Nucl, EUETIB, E-08036 Barcelona, Spain 2.Inst Estudis Espacials Catalunya, E-08034 Barcelona, Spain 3.Japan Atom Energy Agcy, Adv Sci Res Ctr, Ibaraki 3191106, Japan 4.Univ Tokyo, Ctr Nucl Study, Wako, Saitama 3510198, Japan 5.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 6.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 7.Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan 8.RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan 9.China Inst Atom Energy, Beijing 102413, Peoples R China 10.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, B.,Komatsubara, T.,Yamada, T.,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. |
| APA | Guo, B..,Komatsubara, T..,Yamada, T..,Iwasa, N..,Teranishi, T..,...&Wang, H. W..(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. |
| MLA | Guo, B.,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(2013). |
入库方式： OAI收割
来源：近代物理研究所
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