Study of states in 16O by the reaction 15N(τ, d)16O

New astrophysicalSfactor for theN15(Mukhamedzhanov1, Bém2, Burjan3 et al. 2008Phys. Rev. C5513591View full textAdd to dashboardCite

“…Direct measurements of the 15 N(p, γ ) 16 O reaction have been reported by Rolfs and Rodney [1] down to proton energies of E p 155 keV and earlier by Hebbard [2] for proton energies down to E p 220 keV. These measurements disagree at energies below 300 keV by up to a factor of 2.…”

“…15 N(p, γ ) 16 O reaction provides a path from the CN cycle to the CNO bi-cycle and CNO tri-cycle. The measured astrophysical factor for this reaction is dominated by resonant capture through two strong J π = 1 − resonances at E R = 312 and 962 keV and direct capture to the ground state.…”

“…The measured astrophysical factor for this reaction is dominated by resonant capture through two strong J π = 1 − resonances at E R = 312 and 962 keV and direct capture to the ground state. Asymptotic normalization coefficients (ANCs) for the ground and seven excited states in 16 O were extracted from the comparison of experimental differential cross sections for the 15 N( 3 He,d) 16 O reaction with distorted-wave Born approximation calculations. Using these ANCs and proton and α resonance widths determined from an R-matrix fit to the data from the 15 N(p, α) 12 C reaction, we carried out an R-matrix calculation to obtain the astrophysical factor for the 15 N(p, γ ) 16 O reaction.…”

“…The 15 N(p, γ ) 16 O reaction provides the path to form 16 O in stellar hydrogen burning, thus transforming the CN cycle into the CNO bi-cycle and CNO tri-cycle. In stellar environments, the 15 N(p, γ ) 16 O reaction proceeds at very low energies, where it is dominated by resonant capture to the ground state through the first two interfering J π = 1 − s wave resonances at E R = 312 and 964 keV, where E R is the resonance energy in the center-of-mass (c.m.)…”

“…In stellar environments, the 15 N(p, γ ) 16 O reaction proceeds at very low energies, where it is dominated by resonant capture to the ground state through the first two interfering J π = 1 − s wave resonances at E R = 312 and 964 keV, where E R is the resonance energy in the center-of-mass (c.m.) system [1,2].…”