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Phys. Rev. C 57, 2731 - 2739 (1998)

Breakout from the hot CNO cycle: The 18F(p,γ) vs 18F(p,α) branching ratio

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S. Utku1 *, J. G. Ross2 †, N. P. T. Bateman1 ‡, D. W. Bardayan1, A. A. Chen1, J. Görres2, A. J. Howard3, C. Iliadis2 §, P. D. Parker1, M. S. Smith4, R. B. Vogelaar5, M. Wiescher2, and K. Yildiz1
1Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124
2Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556
3Physics Department, Trinity College, Hartford, Connecticut 06106
4Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
5Department of Physics, Princeton University, Princeton, New Jersey 08544

 See Also: Erratum

Received 30 October 1997

We have studied the properties of low-lying 18F+p resonances as excited states in 19Ne. Three new levels have been found in the range 0<~Ec.m.<~1 MeV just above the 18F+p threshold, and partial decay widths and isospin-mirror connections are suggested to known states in 19F for each of the nine states in this energy range. The properties of these resonances have been used to calculate the reaction rate NA〈σv〉 for the 18F(p,γ)19Ne and 18F(p,α)15O reactions in the temperature range 108<T<109. A comparison of these rates indicates that in this temperature range, the 14O(α,p)17F(p,γ)18Ne(e+ν)18F(p,γ)19Ne reaction sequence is not as fast as the 15O(α,γ)19Ne reaction.


©1998 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.57.2731
DOI: 10.1103/PhysRevC.57.2731
PACS: 26.30.+k, 25.40.Ny, 27.20.+n

* Present address: Columbia University Law School, Columbia University, New York, NY 10027.
† Present address: Department of Physics and Astronomy, University of Central Arkansas, Conway, AR 70235.
‡ Present address: TRIUMF, Vancouver, B.C. V6T 2A3, Canada.
§ Present address: Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599.

See Also

Erratum: S. Utku, J. G. Ross, N. P. Bateman, D. W. Bardayan, A. A. Chen, J. Görres, A. J. Howard, C. Iliadis, P. D. Parker, M. S. Smith, R. B. Vogelaar, M. Wiescher, and K. Yildiz, Erratum: Breakout from the hot CNO cycle: The 18F(p,γ) vs 18F(p,α) branching ratio [Phys. Rev. C 57, 2731 (1998)], Phys. Rev. C 58, 1354 (1998)

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