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Microscopic description of the α+16O system in a multicluster model

par Dufour, Marianne ;Descouvemont, Pierre ;Baye, Daniel Jean
Référence Physical Review C (Nuclear Physics), 50, 2, page (795-801)
Publication Publié, 1994

Article révisé par les pairs

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Résumé :

The multicluster generator coordinate method is applied to a microscopic study of the Ne20 spectroscopy and of the O16(,)20Ne capture cross section. The O16 nucleus is described by four clusters located on the apexes of a tetrahedron. The good quantum numbers of the O16 and +16O wave functions are restored by a multiple angular-momentum projection. With respect to the usual two-center approach, where O16 is described by a closed p shell, the five- model improves different Ne20 spectroscopic properties. The O16(,)20Ne S factor is reduced by about 30% at astrophysical energies. © 1994 The American Physical Society.