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Analysis of the generator coordinate method in a study of shape isomerism in 194Hg

par Bonche, Paul;Dobaczewski, Jacek;Flocard, Hubert;Heenen, Paul-Henri ;Meyer, Jacques
Référence Nuclear Physics A, 510, 3, page (466-502)
Publication Publié, 1990

Article révisé par les pairs

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Résumé :

We investigate the properties of the generator coordinate method (GCM) on a collective basis of BCS states. The method is applied to a study of large-amplitude quadrupole dynamics in the nucleus 194Hg. Among the GCM levels, we discuss candidates for a possible shape isomerism associated with a secondary deformed minimum at large deformation (Q ≈ 45b). We also analyze standard approximation schemes based on the gaussian overlap approximation which lead to a collective Schrödinger equation. We compare their predictions with the exact GCM results for the particular case of 194Hg.