Resonant Rate for 15O\(α,γ\)19Ne

Details Resonant Rate for 15O\(α,γ\)19Ne Resonant Rate for 15O\(α,γ\)19Ne

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvl..74.3760m&link_type=abstract

Physical Review Letters, Volume 74, Issue 19, May 8, 1995, pp.3760-3763

Astronomy and Astrophysics

Astrophysics

29

Scientific paper

We have measured angular distributions for the 15N\(6Li,d\)19F and 16O\(6Li,d\)20Ne reactions at a bombarding energy of 22 MeV. Distorted-wave Born-approximation and Hauser-Feshbach calculations were used to analyze the data. Ratios of α-transfer cross sections in 19F and 20Ne, plus isospin invariance, provide ratios of α widths in 19Ne and 20Ne. Using 20Ne ( 1-, 5.788 MeV) as a standard allows the determination of the α-particle width for the state at 4.033 MeV in 19Ne, and hence the resonant rate for the 15O \(α,γ\)19Ne reaction, contributed from the 504 keV, 32+ resonance, at temperatures of astrophysical interest.

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