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

Physics – Nuclear Physics – Nuclear Experiment

Scientific paper

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accepted for publication in Europhysics Letters

Scientific paper

10.1209/epl/i2003-00570-7

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.

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