Article révisé par les pairs
Résumé : Within the generator coordinate method, we study the influence of pairing vibrations on the stability of the superdeformed state in 194Hg. We find an increase of the density of collective states at small deformation above 5 MeV and a large mixing of the superdeformed state with states of the first well. Compared with calculations without pair vibrations, our results predict an earlier depopulation of the superdeformed band. © 1991.