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

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

CHERUBINI, SILVIO;LATTUADA, Marcello;ROMANO, Stefano;
2003-01-01

Abstract

The B-12 excitation energy spectrum has been obtained from coincidence measurements of the Be-9 + Li-7 --> 2alpha + Li-8 reaction at E-0 = 52 MeV. The decay of the states at excitations between 10 and 16 Mev into alpha + Li-8 has been observed for the first time. Observed alpha-decay indicates possible cluster structure of the B-12 excited states. The influence of these states on the cross-section of the astrophysically important Li-8(alpha, n)B-11 and Be-9 + t reactions is discussed and the results are compared with existing results.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/13672
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