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Phys. Rev. C 55, 3149 - 3151 (1997)

Comparison of low-energy resonances in 15N(α,γ)19F and 15O(α,γ)19Ne and related uncertainties

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F. de Oliveira, A. Coc, P. Aguer, G. Bogaert, J. Kiener, A. Lefebvre, V. Tatischeff, and J.-P. Thibaud
CSNSM, IN2P3-CNRS, 91405 Orsay Campus, France

S. Fortier, J. M. Maison, L. Rosier, G. Rotbard, and J. Vernotte
IPN, IN2P3-CNRS et Université de Paris-Sud, 91406 Orsay Cedex, France

S. Wilmes, P. Mohr, V. Kölle, and G. Staudt
Physikalisches Institut, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

Received 23 January 1997

A disagreement between two determinations of Γα of the astrophysically relevant level at Ex=4.378 MeV in 19F has been stated in two recent papers by Wilmes et al. and de Oliveira et al. In this work the uncertainties of both papers are discussed in detail, and we adopt the value Γα = (1.5-0.8+1.5)×10-9  eV for the 4.378 MeV state. In addition, the validity and the uncertainties of the usual approximations for mirror nuclei Γγ(19F)≈Γγ(19Ne), θα2(19F)≈θα2(19Ne) are discussed, together with the resulting uncertainties on the resonance strengths in 19Ne and on the 15O(α,γ)19Ne rate.


©1997 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.55.3149
DOI: 10.1103/PhysRevC.55.3149
PACS: 25.55.-e, 24.30.Gd, 26.30.+k, 95.30.Cq

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