Measurement of the F(p,α)O cross section at nova energies
Research output: Contribution to journal › Article › peer-review
Production of the radioisotope F in novae is severely constrained by the rate of the F(p,α)O reaction. A resonance at E = 330 keV may strongly enhance the 18F(p,α)O reaction rate, but its strength has been very uncertain. We have determined the strength of this important resonance by measuring the F(p,α)O cross section on-and off-resonance using a radioactive F beam at ORNL's Holifield Radioactive Ion Beam Facility. We find that its resonance strength is 1.48 ± 0.46 eV, and that it dominates the F(p,α)O reaction rate over a significant range of temperatures characteristic of nova outbursts occuring on ONeMg white dwarfs.