Astrophysics studies relevant to stellar x-ray bursts

J. J. He, J. Hu, L. Y. Zhang, S. W. Xu, A. Parikh, H. Yamaguchi, D. Kahl, P. Ma, S. Z. Chen, J. Su, Y. Wakabayashi, Y. Togano, S. Hayakawa, H. W. Wang, W. D. Tian, R. F. Chen, B. Guo, T. Nakao, T. Teranishi, J. Y. MoonH. S. Jung, T. Hashimoto, A. A. Chen, D. Irvine, K. I. Hahn, N. Iwasa, T. Yamada, T. Komatsubara, C. S. Lee, S. Kubono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Two reactions of 14O(α,p)17F and 18Ne(α,p)21Na provide the pathways for breakout from the hot CNO cycles to the rp-process in type I X-ray bursts. To better determine their astrophysical reaction rates, resonance parameters of the compound nuclei 18Ne and 22Mg have been investigated by the resonant elastic scattering of 17F+p and 21Na+p, respectively. The 17F and 21Na radioactive ion beams were produced at the CNS Radioactive Ion Beam Separator and impinged on the thick proton targets. The excitation functions were obtained with a thick-target method over a wide excitation energy range. The resonance parameters in the compound nuclei 18Ne and 22Mg have been determined through an R-matrix analysis. New reaction rates of these two (α,p) reactions are recalculated. The astrophysical impact for the 18Ne(α,p)21Na reaction has been investigated through one-zone postprocessing X-ray burst calculations.

Original languageEnglish
Title of host publicationOrigin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
PublisherAmerican Institute of Physics Inc.
Pages176-183
Number of pages8
ISBN (Print)9780735412286
DOIs
Publication statusPublished - 2014 Jan 1
Event12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba, Japan
Duration: 2013 Nov 182013 Nov 21

Publication series

NameAIP Conference Proceedings
Volume1594
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
CountryJapan
CityTsukuba
Period13/11/1813/11/21

Keywords

  • Decay by proton emission
  • Reaction induced by unstable nuclei
  • nuclear astrophysics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    He, J. J., Hu, J., Zhang, L. Y., Xu, S. W., Parikh, A., Yamaguchi, H., Kahl, D., Ma, P., Chen, S. Z., Su, J., Wakabayashi, Y., Togano, Y., Hayakawa, S., Wang, H. W., Tian, W. D., Chen, R. F., Guo, B., Nakao, T., Teranishi, T., ... Kubono, S. (2014). Astrophysics studies relevant to stellar x-ray bursts. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 (pp. 176-183). (AIP Conference Proceedings; Vol. 1594). American Institute of Physics Inc.. https://doi.org/10.1063/1.4874064