Article révisé par les pairs
Résumé : The [Formula Presented] properties as a cosmochronometer and a cosmothermometer are studied, combining Coulomb excitation with the recoil method. The results confirm that this isotope should be dismissed as a reliable cosmochronometer. On the other hand, this nucleus synthesis takes place, in all probability, at temperatures between [Formula Presented] and [Formula Presented] The assignment of the levels reached leads to some difficulties as to their reduced transition probabilities. © 2000 The American Physical Society.