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HK: Fachverband Physik der Hadronen und Kerne
HK 41: Structure and Dynamics of Nuclei VII
HK 41.1: Group Report
Wednesday, March 30, 2022, 14:00–14:30, HK-H7
Mass measurements of short-lived exotic nuclei at TITAN - update on recent developments — •Tobias Murböck for the TITAN collaboration — TRIUMF, Vancouver, British Columbia, Canada — II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen, Germany
The mass of a nucleus is determined by the number of its constituents, protons and neutrons, and the binding energy resulting from the interaction between those fundamental building blocks. High-precision mass measurements therefore provide relevant data for studies of the nucleus’s structure, nuclear astrophysics and fundamental symmetries. In the pursuit of exotic nuclei with extreme proton-to-neutron ratios and half-lives of just a few ms, fast and sensitive experiments are required. One of those experiments, TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN), is located at TRIUMF, Canada’s particle accelerator center, in Vancouver. Complementing a Penning trap mass spectrometer, a Multiple-Reflection Time-Of-Flight Mass-Spectrometer (MR-TOF-MS) has been recently added to TITAN. With its capacity for fast, non-scanning, sensitive and high-resolution mass spectrometry, the MR-TOF-MS has helped to extend TITAN’s measurement program to even more exotic nuclei. Here we present recent measurements of neutron-rich 63−65Cr and 67−70Fe in the region of the N=40 island of inversion, and data from the neutron-deficient nuclei 60−61Ga and 74−76Sr in the path of the rp-process. In addition we give an update on technical developments like the improvements in mass resolution to 6E5 and the increased stability of the system.