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C12(α,γ)16O E2 cross section in a microscopic four-alpha model

par Descouvemont, Pierre
Référence Physical Review C (Nuclear Physics), 47, 1, page (210-215)
Publication Publié, 1993

Article révisé par les pairs

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Résumé :

The C12(α,γ)16O E2 cross section is calculated in the generator coordinate method where C12 is described by three α particles located on the apexes of an equilateral triangle. Distortion effects in the C12 wave functions are taken into account, and the O16 wave functions are defined by a mixing of α+12C(0+,2+) configurations. The good quantum numbers are restored through angular momentum projection. We compute quadrupole transition probabilities between low-energy O16 states, and the C12(α,γ)16O E2 cross sections to the ground and 21+ states. At 300 keV, we find an S factor equal to 0.09 MeV b. © 1993 The American Physical Society.