Phys.Rev. C 98, 055804 (2018)

K.Setoodehnia, C.Marshall, J.H.Kelley, J.Liang, F.Portillo Chaves, R.Longland

Excited states of ³⁹Ca and their significance in nova nucleosynthesis

NUCLEAR REACTIONS ⁴⁰Ca(³He, α), E=21 MeV; measured Eα, Iα, σ(θ), using Enge split-pole magnetic spectrograph at the 10-MV FN tandem Van de Graaff accelerator of TUNL facility. DWBA analysis of σ(θ) data. ³⁹Ca; deduced levels, J, π, resonances. Comparison with previous experimental data for ³⁹Ca levels from (³He, α), (d, t) and (p, d) reactions, and in ENSDF evaluation. ³⁸K(p, γ), T₉=0.1-0.5; calculated contributions of resonances to astrophysical reaction rate in the nova temperature regime.

doi: 10.1103/PhysRevC.98.055804