Measurement of the O-14(alpha, p)F-17 cross section at E-c.m. approximate to 2.1-5.3 MeV
文献类型：期刊论文
| 作者 | Kim, A.1; Lee, N. H.1; Han, M. H.2; Yoo, J. S.2; Hahn, K. I.1,2; Yamaguchi, H.3; Binh, D. N.3; Hashimoto, T.3; Hayakawa, S.3; Kahl, D.3 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 92页码:7 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.92.035801 |
| 英文摘要 | Background: The O-14(alpha, p)F-17 reaction plays an important role as the trigger reaction for the x-ray burst. Purpose: The direct measurement of O-14(alpha, p)F-17 was made for studying the resonant states in Ne-18 and determining the reaction rate of O-14(alpha, p)F-17 at astrophysical temperatures. Methods: The differential cross section of the O-14(alpha, p)F-17 reaction was measured using a 2.5-MeV/u O-14 radioactive beam and the thick target method in inverse kinematics. Three sets of Delta E-E Si telescopes were installed and coincidence measurements were performed. We analyzed single-proton decay events using the time-of-flight (TOF) information of the recoiling protons. Results: The excitation function of O-14(alpha, p)F-17 was acquired for excitation energies between 7.2 and 10.4 MeV in Ne-18 by considering the two channels which decay to the ground state and first excited state of F-17. Several new, as well as previously known, states in Ne-18 were observed and their resonance parameters were extracted from R-matrix analysis. The contributions of four resonances over the excitation energy range, 7 < E-x < 8.2 MeV, to the O-14(alpha, p)F-17 reaction rate were calculated. Conclusions: We observed very strong single-proton decay events, but did not observe strong double-proton decay events as in a previous study by Fu et al. The reaction rates contributed by the 7.35-, 7.58-, and 7.72-MeV states were estimated to be dominant at temperatures T-9 > 2. Among these three states, the 7.35-MeV state was found to enhance the reaction rate by a factor of 10 greater than the other two resonance states. |
| WOS关键词 | SHORT-LIVED NUCLEI ; STELLAR REACTIONS ; NE-18 ; ALPHA)O-14 ; F-17(P ; STATES ; SHELL ; O-14 ; CRIB |
| 资助项目 | Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education[NRF-2010-0027136] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education[NRF-2012R1A1A3007962] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education[NRF-2014R1A1A2A16052632] ; JSPS KAKENHI[21340053] ; JSPS KAKENHI[25800125] ; National Research Foundation - Korean Government[NRF-2009-0093817] ; National Research Foundation - Korean Government[NRF-2013R1A1A2063017] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000360332400003 |
| 资助机构 | Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education ; JSPS KAKENHI ; National Research Foundation - Korean Government |
| 源URL | [http://119.78.100.186/handle/113462/40471]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Kim, A. |
| 作者单位 | 1.Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea 2.Ewha Womans Univ, Dept Sci Educ, Seoul 120750, South Korea 3.Univ Tokyo, RIKEN Branch, Ctr Nucl Study, Tokyo 1138654, Japan 4.RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan 5.Inst Modern Phys, Lanzhou, Peoples R China 6.Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea 7.Inst for Basic Sci Korea, Taejon 305811, South Korea 8.Chung Ang Univ, Dept Phys, Seoul 156756, South Korea 9.Kyushu Univ, Fukuoka 8128581, Japan 10.Yamagata Univ, Yamagata 9908560, Japan |
| 推荐引用方式 GB/T 7714 | Kim, A.,Lee, N. H.,Han, M. H.,et al. Measurement of the O-14(alpha, p)F-17 cross section at E-c.m. approximate to 2.1-5.3 MeV[J]. PHYSICAL REVIEW C,2015,92:7. |
| APA | Kim, A..,Lee, N. H..,Han, M. H..,Yoo, J. S..,Hahn, K. I..,...&Wang, Y..(2015).Measurement of the O-14(alpha, p)F-17 cross section at E-c.m. approximate to 2.1-5.3 MeV.PHYSICAL REVIEW C,92,7. |
| MLA | Kim, A.,et al."Measurement of the O-14(alpha, p)F-17 cross section at E-c.m. approximate to 2.1-5.3 MeV".PHYSICAL REVIEW C 92(2015):7. |
入库方式： OAI收割
来源：近代物理研究所
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