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Girod, M.; Delaroche, J.P.; Berger, J.F.
CEA Centre d'Etudes de Bruyeres-le-Chatel, 91 (France)1988
CEA Centre d'Etudes de Bruyeres-le-Chatel, 91 (France)1988
AbstractAbstract
[en] This theoretical study is intended to establish a preliminary selection of non fissible even-even nuclei with mass number A < 208 for which the potential energy surfaces V (β) display a secondary minimum along an elongation coordinate β. Our selection relies upon a joint use of the Hartree-Fock-Bogoliubov and Strutinsky methods. The occurrence of secondary minima in V (β) maps is of critical importance for the formation of long life excited states (i.e. shape isomers) which most likely would decay into the γ channel. Our study shows that more than seventy nuclei in the vicinity of the stability line might develop shape isomerism
[fr]
Cette etude theorique a pour but d'etablir une premiere selection de noyaux pairs-pairs non fissiles de masses A < 208 dont les surfaces d'energie potentielle V (β) presentent un minimum secondaire en fonction d'un parametre d'elongation β. Notre selection est faite a partir d'une procedure qui combine les methodes Hartree-Fock-Bogoliubov et de Strutinsky. L'existence de minima secondaires dans les cartes V (β) est necessaire a la formation d'etats excites de longue duree de vie (i.e. isomeres de forme) qui se desexciteraient preferentiellement dans la voie γ. Il resulte de notre etude qu'approximativement soixante dix noyaux proches de la vallee de stabilite pourraient developper un isomerisme de formeOriginal Title
Isomeres de forme dans les noyaux pairs-pairs: premiere selection de candidats dans la region de masses A<208
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May 1988; 109 p
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