The coexistence of single-particle and collective degrees of freedom in atomic nuclei gives rise to various exotic phenomena. In nuclei with very asymmetric proton-to-neutron ratios, the strong nuclear interaction drives shell evolution which alters the orbital spacing, and in some cases even the ordering present in
stable nuclei. In the absence of large gaps between orbitals, nuclei can take on non-spherical shapes and their excitations proceed through coherent and collective motion of many nucleons. Where and how collectivity emerges from the single-particle dynamics of protons and neutrons is an open question in nuclear structure physics. In this talk, I will present some current highlights of experimental investigations of nuclei at the extremes and how they advance our understanding of nuclear structure. The aim of the LISA (LIfetime measurements with Solid Active targets) project is to develop a novel method for lifetime measurements in atomic nuclei. Lifetimes probe the collectivity of a nucleus through its electromagnetic transition properties. The experimental approach will dramatically enhance the scope of measurements of excited-state lifetimes in exotic nuclei. This novel ERC funded instrument will overcome the present challenges of lifetimes measurements with low-intensity beams of unstable nuclei.
This seminar is held by the ERC grant holder as part of the evaluation process of the DFA as host istitute for the grant.
Zoom Link: https://unipd.zoom.us/j/81818608347
Francesco Recchia
