We have measured proton and ␣-particle branching ratios of states formed using the 19 F͑ 3 He, t͒ 19 Ne * reaction at a beam energy of 25 MeV. These ratios have a large impact on the astrophysical reaction rates of 15 O͑␣ , ␥͒ 19 Ne, 18 F͑p , ␥͒ 19 Ne, and 18 F͑p , ␣͒ 15 O, which are of interest in understanding energy generation in x-ray bursts and in interpreting anticipated ␥-ray observations of novae. We detected decay protons and ␣ particles using a silicon detector array in coincidence with tritons measured in the focal plane detector of our Enge split-pole spectrograph. The silicon array consists of five strip detectors of the type used in the Louvain-Edinburgh Detector Array, subtending angles from 130°to 165°with Ϸ14% lab efficiency. The correlation angular distributions give additional confidence in some prior spin-parity assignments that were based on ␥ branchings. We measure ⌫ p / ⌫ = 0.387± 0.016 for the 665 keV proton resonance, which agrees well with the direct measurement of Bardayan et al.

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