Direct measurement of the astrophysical reaction 14O(α,p)17F

M. Notani, S. Kubono, T. Teranishi, Y. Yanagisawa, S. Michimasa, K. Ue, J. J. He, H. Iwasaki, H. Baba, M. Tamaki, T. Minemura, S. Shimoura, N. Hokoiwa, Y. Wakabayashi, T. Sasaki, T. Fukuchi, A. Odahara, Y. Gono, Zs Fülöp, E. K. LeeK. I. Hahn, J. Y. Moon, C. C. Yun, J. H. Lee, C. S. Lee, S. Kato

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Abstract

The stellar reaction 14O(α,p)17F, that critically determines the onset of the hightemperature rp-process, has been studied through a direct measurement with a low-energy radioactive 14O beam and a gaseous helium target cooled down to 30 K. The reaction cross section was measured directly by means of a thick target technique in the energy range of Ec.m(l4O+α) = 0.8-3.8 MeV. The 14O(α,p)17F* reaction leading to the first excited state in 17F was clearly observed for the first time, suggesting an increase of about 50% for the stellar reaction rate through resonances at around 7.1 MeV in 18Ne.

Original languageEnglish
Pages (from-to)411-415
Number of pages5
JournalNuclear Physics A
Volume738
Issue number1-4 SUPPL.
DOIs
Publication statusPublished - Jun 28 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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