Observation of the astrophysically important 3 state in Ne via elastic scattering of a radioactive F beam from H

D.W. Bardayan, J.C. Blackmon, C.R. Brune, A.E. Champagne, A.A. Chen, J.M. Cox, T. Davinson, V.Y. Hansper, M.A. Hofstee, B.A. Johnson, R.L. Kozub, Z. Ma, P.D. Parker, D.E. Pierce, M.T. Rabban, A.C. Shotter, M.S. Smith, K.B. Swartz, D.W. Visser, P.J. Woods

Research output: Contribution to journalArticlepeer-review

Abstract

The F(p, γ)Ne reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3 state in Ne that has never been conclusively observed. This state would provide a strong ℓ = 0 resonance and, depending on its excitation energy, could dominate the stellar reaction rate. We have observed this missing 3 state by measuring the H(F, p)F excitation function with a radioactive F beam at the ORNL Holifield Radioactive Ion Beam Facility. We find that the state lies at a center-of-mass energy of E = 599.8 ± 1.5 ± 2.0 keV (E = 4523.7 ± 2.9 keV) and has a width of Γ = 18 ± 2 ± 1 keV.
Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number1
Publication statusPublished - 5 Jul 1999

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