New 19Ne resonance observed using an exotic 18F beam
The rates of the 18F(p,α) 15O and 18F(p,γ) 19Ne reactions in astrophysical environments depend on the properties of 19Ne levels above the 18F + p threshold. There are at least 8 levels in the mirror nucleus 19F for which analogs have not been observed in 19Ne in the excitation energy range E x = 6.4-7.6MeV. We have made a search for these levels by measuring the 1H( 18F, p) 18F excitation function over the energy range E c.m. = 0.3-1.3MeV. We have identified and measured the properties of a newly observed level at E x = 7.420±0.014MeV, which is most likely the mirror to the J π = 7/2+19F level at 7.56MeV. This new level is found to increase the calculated 18F(p,α) 15O reaction rate by 16%, 63%, and 106% at T = 1, 2, and 3GK, respectively. © Società Italiana di Fisica / Springer-Verlag 2005.
Publication Source (Journal or Book title)
European Physical Journal A
Bardayan, D., Blackmon, J., Gómez Del Campo, J., Kozub, R., Liang, J., Ma, Z., Shapira, D., Sahin, L., & Smith, M. (2005). New 19Ne resonance observed using an exotic 18F beam. European Physical Journal A, 25 (SUPPL. 1), 643-644. https://doi.org/10.1140/epjad/i2005-06-007-3