The F-17(p, gamma)Ne-18 direct capture cross section
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The 17 F(p,) 18 Ne reaction is important for understanding nucleosynthesis in novae. This reaction rate is expected to be dominated by the unmeasured direct-capture cross section at nova temperatures. We have measured cross sections for the proton-transfer reaction 14 N( 17 F, 18 Ne) 13 C to determine 17 F+p asymptotic normalization coefficients for 18 Ne bound states and the 17 F(p, ) 18 Ne direct-capture cross section. Elastic scattering cross sections for the 14 N( 17 F, 17 F) 14 N and 12 C( 17 F, 17 F) 12 C reactions were also measured and used to determine reliable optical-model parameters within the framework of a microscopic double-folding model. Here we present the technique and some preliminary results. 2004 Elsevier B.V. All rights reserved.