Phys.Rev. C 102, 035804 (2020)

G.Lotay, D.T.Doherty, D.Seweryniak, M.P.Carpenter, R.V.F.Janssens, J.Jose, A.M.Rogers, P.J.Woods, S.Zhu

Spectroscopy of ³⁰P and the abundance of ²⁹Si in presolar grains

NUCLEAR REACTIONS ²⁸Si(³He, p), E=13 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(DCO) using the Gammasphere array of 97 Compton-suppressed HPGe detectors at ATLAS-ANL facility. ³⁰P; deduced levels, resonances, J, π, and compared with evaluated data in the ENSDF database. ²⁹Si(p, γ)³⁰P, E(proton resonance)=2-500 keV; deduced spectroscopic factors, Γ_p, Γ_γ, resonance strengths, astrophysical reaction rates from 0.08 to 0.5 GK. Evaluated mean composition of nova ejecta of ^28,29,30Si, ³¹P, ^32,33,34S from models of nova explosions and compared with data in STARLIB database.

doi: 10.1103/PhysRevC.102.035804