CNRS Université Bordeaux

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Structure of nuclei near N,Z 82 shell closure

Gopal Mukherjee, Variable Energy Cyclotron Centre, Kolkata, India
Mardi 24 Août 2010 à 10h30 - Salle des Séminaires

The structure of nuclei with proton and/or neutron numbers close to the spherical magic gaps remain an interesting subject of experimental and theoretical investigations. The shape or the structure of such nuclei depends heavily on the available levels for protons and neutrons and their shape driving effects near the Fermi surface. Competition of spherical and deformed (both prolate and oblate) structures are often observed for such nuclei which results in to gamma softness and triaxiality. These structures in turn generates exotic new symmetries like chirality in nuclear system. It is important to study the structure of the nuclei close to the magic gaps systematically for a close understanding. The heaviest common magic number for protons and neutrons is 82. The structure of nuclei in mass region A = 130 and A = 190, around this magic number, have been studied by us using gamma ray spectroscopy technique and using the existing facilities in India. I shall briefly show gamma ray spectroscopic and some of the other experimental facilities for nuclear physics research in our laboratory at VECC, Kolkata and shall discuss some our recent results on the topic mentioned above.