Phys.Rev. C 99, 065801 (2019)

B.E.Glassman, D.Perez-Loureiro, C.Wrede, J.Allen, D.W.Bardayan, M.B.Bennett, K.A.Chipps, M.Febbraro, M.Friedman, C.Fry, M.R.Hall, O.Hall, S.N.Liddick, P.O'Malley, W.-J.Ong, S.D.Pain, S.B.Schwartz, P.Shidling, H.Sims, L.J.Sun, P.Thompson, H.Zhang

Doppler broadening in ²⁰Mg(βpγ)¹⁹Ne decay

RADIOACTIVITY ²⁰Mg(β⁺p)[²⁰Mg beam from ⁹Be(²⁴Mg, X), E=170 MeV/nucleon, followed by separation using A1900 separator at NSCL-MSU]; measured Eβ⁺, Eγ, Iγ, β⁺γ-coin, γ-decay branching ratios, and E(p) using plastic scintillator for β detection and the SeGA array for γ detection. ¹⁹Ne; deduced levels, J, π, half-life of 1507.5 level from Doppler broadening analysis, β⁺p feedings. Comparison with previous experimental values. Discussed relevance to ¹⁵O(α, γ)¹⁹Ne thermonuclear reaction rates.

NUCLEAR REACTIONS ⁹Be(²⁴Mg, X)¹⁵N/¹⁶O/¹⁷F/¹⁸Ne/²⁰Mg, E=170 MeV/nucleon; measured time of flight, particle identification plot, yields using A1900 fragment separator at the K500 and K1200 coupled cyclotrons of NSCL-MSU.

doi: 10.1103/PhysRevC.99.065801