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The effects of two-body correlations in 16O on the bremsstrahlung weighted cross section

Publication: Canadian Journal of Physics
August 1980

Abstract

The bremsstrahlung weighted cross section σ−1, is calculated for,16O using the linked cluster expansion to introduce two-body correlations. All diagrams up to second order in the G-matrix are calculated. A particular choice is made among these diagrams which are grouped in order to preserve the normalization of the one-body density and of the two-body density. This selection of diagrams is shown to be consistent with an expansion in the number of hole-lines. The correlated value obtained in this way, σ−1 = 14.99 mb, is close to the experimental value σ−1 = 15.10 mb although the calculation might still be subject to improvement.

Résumé

On a calculé la section efficace de photodésintégrationa σ−1 de 16O en utilisant le développement en amas associés pour introduire les corrélations à deux corps. Tous les diagrammes jusqu'au second ordre de la matrice G sont calculés. On effectue une sélection parmi ces diagrammes, et ceux qui sont retenus sont groupés de façon à préserver la normalisation de la densité pour un corps et de la densité pour deux corps. On montre que ce choix de diagrammes est compatible avec un développement en termes du nombre de lignes-trous. La valeur avec corrélation ainsi obtenue, σ−1 = 14.99 mb, est proche de la valeur expérimentale σ−1 = 15.10 mb; le calcul reste toutefois encore sujet à amélioration.[Traduit par le journal]

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cover image Canadian Journal of Physics
Canadian Journal of Physics
Volume 58Number 8August 1980
Pages: 1099 - 1118

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Version of record online: 11 February 2011

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