Abstract
A high-precision measurement of the 20Ne(3He,t)20Na reaction has been made using implanted 20Ne transmission targets to obtain pertinent information on the low-energy resonances in the 19Ne(p, γ)20Na reaction. Resonance energies (447±5, 658±5, 787±5, and 857±5 keV) and upper limits on total intrinsic widths (<10, <6, <10, and <16keV) have been measured for four excited states above the 2.199 MeV proton threshold in 20Na. The stellar 19Ne(p, γ)20Na reaction rate is calculated for temperatures between 1×108 and 1×109 K. When combined with a recent study of the 15O(α, γ)19Ne reaction, a new estimate is made of the conditions required for breakout from the Hot CNO cycle to the rapid proton capture process.
Published Version
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