D(18F,pa)15N reaction applied to nova gamma-ray emission

Details D(18F,pa)15N reaction applied to nova gamma-ray emission D(18F,pa)15N reaction applied to nova gamma-ray emission

2003-04-15

arxiv.org/abs/nucl-ex/0304014v1

Phys.Rev.C67:052801,2003

Physics

Nuclear Physics

Nuclear Experiment

Rapid Communication to appear in Phys. Rev. C., 4 pages and 4 figures

Scientific paper

10.1103/PhysRevC.67.052801

The 18F(p,alpha)15O reaction is recognized to be one of the most important reactions for nova gamma-ray astronomy as it governs the early E <= 511keV gamma emission. However in the nova temperature regime, its rate remains largely uncertain due to unknown low-energy resonance strengths. We report here the measurement of the D(18F,p)19F(alpha)15N one-nucleon transfer reaction, induced by a 14 MeV 18F radioactive beam impinging on a CD2 target; outgoing protons and 15N (or alpha-particles) were detected in coincidence in two silicon strip detectors. A DWBA analysis of the data resulted in new limits to the contribution of low-energy resonances to the rate of the 18F(p,alpha)15O reaction.

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