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12C + 16O molecular resonances at deep sub-barrier energy

Abstract
The existence of 12C + 16O molecular resonances at sub-barrier energy has been a significant problem in nuclear astrophysics because they strongly affect the 12C + 16O fusion reaction rate in type Ia supernovae and heavy stars. However, experimental surveys have been limited to 4 MeV and cannot access the deep sub-barrier energy due to a very small fusion cross section. Here we predict a couple of resonances with Jπ = 0+, 2+, and 4+ in the deep sub-barrier energy based on the antisymmetrized molecular dynamics calculation that reproduces the known resonances and low-lying spectrum of 28Si.

 

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Original article:
Taniguchi Y. and Kimura M., 12C + 16O molecular resonances at deep sub-barrier energy. Physics Letters, January 10, 2020.
DOI: 10.1016/j.physletb.2019.135086