Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2003-03-24
Phys.Rev. C67 (2003) 065808
Physics
Nuclear Physics
Nuclear Experiment
submitted to PRC
Scientific paper
10.1103/PhysRevC.67.065808
A recoil coincidence technique has been applied to measure the alpha-decay branching ratios of near-threshold states in 19Ne. Populating these states using the (p,t) reaction in inverse kinematics, we detected the recoils and their decay products with 100% geometric efficiency using a magnetic spectrometer. Combining our branching ratio measurements with independent determinations of the radiative widths of these states, we calculate the astrophysical rate of 15O(alpha,gamma)19Ne. Using this reaction rate, we perform hydrodynamic calculations of nova outbursts and conclude that no significant breakout from the hot CNO cycles into the rp process occurs in novae via 15O(alpha,gamma)19Ne.
Davids Barry
de Huu M. A.
Dendooven Peter
Ernst Rehm K.
Fleurot F.
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