December 2023
·
102 Reads
The European Physical Journal Conferences
Isomeric states of the neutron-rich isotope ¹⁸⁹ 73 Ta 116 were populated via fragmentation of a primary beam of ²⁰⁸ Pb ions at 1 GeV/u impinging on a ⁹ Be target at GSI, Darmstadt, Germany. The isotopes of interest were separated, identified and delivered to the DESPEC setup. Two isomers were deduced in ¹⁸⁹ Ta 116 and their lifetimes were measured based on the γ-ray time distributions.