First Direct Measurement of the ^17F(p,γ)^18Ne Cross Section

Physics – Nuclear Physics

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Scientific paper

The rate of the ^17F(p,γ)^18Ne reaction is of significant importance in astrophysical events like novae and x-ray bursts. A 3^+ state in ^18Ne predicted to dominate the rate was found at 599.8 keV using the ^17F(p,p)^17F reaction [1], but the resonance strength was unknown. For the first time, the ^17F(p,γ)^18Ne reaction has been measured directly with the Daresbury Recoil Separator, using a mixed beam of radioactive ^17F and stable ^17O from the HRIBF at ORNL. Resonant proton capture cross sections, γ widths, and resonance strengths for the 599.8 keV and 1178 keV resonances will be reported, as well as an upper limit on the direct capture cross section at an intermediate energy. [1] Bardayan et al., Phys. Rev. C 62 055804 (2000)

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