Indirect study of 19Ne states near the 18F+p threshold

Details Indirect study of 19Ne states near the 18F+p threshold Indirect study of 19Ne states near the 18F+p threshold

2007-02-16

arxiv.org/abs/nucl-ex/0702034v1

Nucl.Phys.A791:251-266,2007

Physics

Nuclear Physics

Nuclear Experiment

18 pages, 8 figures. Accepted in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2007.02.003

The early E < 511 keV gamma-ray emission from novae depends critically on the 18F(p,a)15O reaction. Unfortunately the reaction rate of the 18F(p,a)15O reaction is still largely uncertain due to the unknown strengths of low-lying proton resonances near the 18F+p threshold which play an important role in the nova temperature regime. We report here our last results concerning the study of the d(18F,p)19F(alpha)15N transfer reaction. We show in particular that these two low-lying resonances cannot be neglected. These results are then used to perform a careful study of the remaining uncertainties associated to the 18F(p,a)15O and 18F(p,g)19Ne reaction rates.

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