Speaker
Description
Classical novae are one of the most energetic stellar events in the Universe. In this site, intense γ-rays due to the beta decay of 18F produced are emitted by the HCNO cycle. The amount of 18F is determined by two destructive channels 18F(p,α)15O and 18F(p,γ)19Ne[1]. The reaction rates of the two destructive channels affect to the novae calculation model[2,3]. For this reason, many experiments and theoretical works have been reported on the resonances of 19Ne near and above the proton threshold, which can contribute to the reaction rate. However, many relevant parameters are still not measured.[4,5] We performed alpha elastic scattering experiment with the radioactive 15O beam for investigating the resonance parameters near the proton threshold using the thick target method at CRIB of the Center for Nuclear Study. The excitation function of 19Ne was obtained between Ex=3.53 MeV and Ex=11.13 MeV. The experimental details and results on the structure of 19Ne will be presented.
[1] M. Hernanz et al., Astrophys. J. 526, L97 (1999).
[2] S. Utku et al., Phys. Rev. C 58, 1354(E) (1998).
[3] A. Coc et al.,Astron. Astrophys. 357, 561(2000).
[4] A. St. J. Murphy et al., Phys. Rev. C 79, 058801 (2009).
[5] A. M. Laird et al., Phys. Rev. Lett. 110, 032502 (2013).
