The O(α,p)F reaction rate

J.C. Blackmon, D.W. Bardayan, W. Bradfield-Smith, R. Brummitt, A.E. Champagne, A.A. Chen, T. Davinson, L. Dessieux, M.W. Guidry, K.I. Hahn, G.M. Hale, W.R. Hix, R.L. Kozub, Z. Ma, P.D. Parker, G. Rajbaidya, R.C. Runkle, C.M. Rowland, A.C. Shotter, M.S. SmithL.A. Van Wormer, D.W. Visser, P.J. Woods

Research output: Contribution to journalArticlepeer-review

Abstract

The O(α,p)F reaction is an important part of the hot CNO cycle. We have measured cross sections for the F(p,p)F, F(p,p)F*, and F(p,α)O reactions in inverse kinematics using radioactive F beams from the Holifield Radioactive Ion Beam Facility. The properties of states in Ne, including those important for the O(α,p F reaction rate, were determined from an R-matrix analysis of the measured cross sections. An improved O(α,p F reaction rate has been determined. The hot CNO cycle of reactions is important in explosive astrophysical environments such as novae and X-ray bursts. In this cycle, proton captures by C and N in succession lead to the production of O. Destruction of O occurs by O(β)N and by the O(α,p)F reaction. The slow rate of this reaction can limit energy generation and result in substantial abundances of the O isotope in novae [1] and X-ray bursts [2].
Original languageEnglish
JournalNuclear Physics A
Volume723
Issue number1-2
DOIs
Publication statusPublished - 28 Jul 2003

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