8Li+alpha decay of 12B and its possible astrophysical implications

Abstract

The 12B excitation energy spectrum has been obtained from coincidence measurements of the 9Be+7Li -> 2alpha+8Li reaction at E{0}=52 MeV. The decay of the states at excitations between 10 and 16 Mev into alpha$+8Li has been observed for the first time. Observed alpha-decay indicates possible cluster structure of the 12B excited states. The influence of these states on the cross section of the astrophysically important 8Li(alpha,n)11B and 9Be+t reactions is discussed and the results are compared with existing results.

accepted for publication in Europhysics Letters

Cited by in corpus (2)

• alpha-decay of excited states in 11C and 11B
• Solving the large discrepancy between inclusive and exclusive measurements of the ${}^8\mathrm{Li}+{}^4\mathrm{He}\to {}^{11}\mathrm{B}+n$ reaction cross section at astrophysical energies