Study of the 18F(p,α) 15O Reaction at Energies Relevant for 18F Nucleosynthesis in Novae

Details Study of the 18F(p,α) 15O Reaction at Energies Relevant for 18F Nucleosynthesis in Novae Study of the 18F(p,α) 15O Reaction at Energies Relevant for 18F Nucleosynthesis in Novae

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..637..425b&link_type=abstract

CLASSICAL NOVA EXPLOSIONS: International Conference on Classical Nova Explosions. AIP Conference Proceedings, Volume 637, pp. 4

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Novae, Dwarf Novae, Recurrent Novae, And Other Cataclysmic Variables, Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments

Scientific paper

Production of the radioisotope 18F in novae is severely constrained by the rate of the 18F(p,α)15O reaction. A resonance at Ec.m. = 330 keV may strongly enhance the 18F(p,α)15O reaction rate, but its strength has been very uncertain. We have determined the strength of this important resonance by measuring the 18F(p,α)15O cross section on- and off- resonance using a radioactive 18F beam at the ORNL Holifield Radioactive Ion Beam Facility. We find that its resonance strength is 1.48 +/- 0.46 eV, and that it dominates the 18F(p,α)15O reaction rate over a wide range of temperatures characteristic of novae.

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