Shape coexistence in

Le résumé fourni par la source

Low-energy multi-step Coulomb excitation measurements have been performed to study the structure of low-lying excitations in the zirconium isotopes, which are particularly interesting as, in recent years, evidence has come to light that they are excellent cases for exhibiting shape evolution and shape coexistence. In order to provide definitive information on the shapes of the low-lying states of 94,96Zr, two Coulomb excitation experiments were performed at INFN-LNL using γ-ray spectrometers coupled with the heavy-ion detector array SPIDER. In the 94Zr experiment SPIDER was coupled to the resident array GALILEO, based on HPGe detectors, and 6 lanthanum bromide scintillators. In the 96Zr experiment the γ-ray tracking spectrometer AGATA was used in conjunction with SPIDER. The information obtained from the measured yields for γ-particle coincidences indicates the presence of coexisting shapes in these nuclei and will allow for an in-depth comparison with theoretical predictions.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.