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Evolution of the structure of nuclei in the vicinity of Z=82 from a ground-state (and low-energy structure) perspective

Mardi 10 novembre 2015 11:00 - Duree : 1 heure
Lieu : ILL 1 - Seminar Room 07/08, 71 avenue des Martyrs - Grenoble

Orateur : Thomas Elias COCOLIOS (KU Leuven - IKS, Leuven, Belgium)

The proton number Z=82, is known as one of the most robust magic numbers from the nuclear landscape. The lead isotopes, bearer of that proton number, are the established reference for spherical nuclei [1] to which all isotopes in the region are compared. As one departs from Z=82, and reaches further away from the neutron shell closure at N=126, new features emerge, such as shape coexistence at very low energy [2] or the reflection-asymmetric deformed nuclei [3] that could be used for the study of physics beyond the standard model.

At the CERN ISOLDE facility in Geneva, Switzerland, a wide variety of high-quality, high-purity, radioactive ion beams in the region of Z=79-88 are available, some with high intensity, some far removed from the N=126 shell closure. This feature of the ISOLDE facility has enabled a large number of experimental programmes to be carried out, which, when put together, offer a unique perspective into this region of the nuclear chart.

In this presentation, I shall present some recent results from nuclear decay spectroscopy, in-source and in-flight laser spectroscopy, and high-precision mass spectrometry, that have contributed to enhancing our understanding of this region of the nuclear chart.

[1] H. De Witte et al., PRL 98 (2007) 112502.

[2] K. Heyde & J.L. Wood, RMP 83 (2011) 1467-1521

[3] L. Gaffney et al., Nature 497 (2013) 199-204

Contact : tellier@ill.fr

Discipline évènement : (Physique)
Entité organisatrice : (ILL)
Nature évènement : (Séminaire)
Evènement répétitif : (General ILL Seminar - College 3)
Site de l'évènement : Polygone scientifique

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