Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts
DC Field | Value | Language |
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dc.contributor.author | Hu, J. | - |
dc.contributor.author | He, J. J. | - |
dc.contributor.author | Parikh, A. | - |
dc.contributor.author | Xu, S. W. | - |
dc.contributor.author | Yamaguchi, H. | - |
dc.contributor.author | Kahl, D. | - |
dc.contributor.author | Ma, P. | - |
dc.contributor.author | Su, J. | - |
dc.contributor.author | Wang, H. W. | - |
dc.contributor.author | Nakao, T. | - |
dc.contributor.author | Wakabayashi, Y. | - |
dc.contributor.author | Teranishi, T. | - |
dc.contributor.author | Hahn, K. I. | - |
dc.contributor.author | Moon, J. Y. | - |
dc.contributor.author | Jung, H. S. | - |
dc.contributor.author | Hashimoto, T. | - |
dc.contributor.author | Chen, A. A. | - |
dc.contributor.author | Irvine, D. | - |
dc.contributor.author | Lee, C. S. | - |
dc.contributor.author | Kubono, S. | - |
dc.date.available | 2019-03-08T21:37:16Z | - |
dc.date.issued | 2014-08 | - |
dc.identifier.issn | 2469-9985 | - |
dc.identifier.issn | 2469-9993 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/11925 | - |
dc.description.abstract | 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. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Examination of the role of the O-14(alpha, p)F-17 reaction rate in type-I x-ray bursts | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevC.90.025803 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW C, v.90, no.2 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000341240300005 | - |
dc.identifier.scopusid | 2-s2.0-84922834394 | - |
dc.citation.number | 2 | - |
dc.citation.title | PHYSICAL REVIEW C | - |
dc.citation.volume | 90 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ASTROPHYSICAL REACTION-RATES | - |
dc.subject.keywordPlus | ACCRETING NEUTRON-STARS | - |
dc.subject.keywordPlus | SHORT-LIVED NUCLEI | - |
dc.subject.keywordPlus | HOT CNO CYCLE | - |
dc.subject.keywordPlus | RESONANCE SCATTERING | - |
dc.subject.keywordPlus | ELASTIC-SCATTERING | - |
dc.subject.keywordPlus | STELLAR REACTIONS | - |
dc.subject.keywordPlus | SEPARATOR CRIB | - |
dc.subject.keywordPlus | RP-PROCESS | - |
dc.subject.keywordPlus | NUCLEOSYNTHESIS | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Nuclear | - |
dc.description.journalRegisteredClass | scopus | - |
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