Search for rare nuclear decays with low-background detectors

Monday 8 Nov 2021, 16:00 → 18:00 Europe/Rome

Dipartimento di Fisica - Ed. G. MarconiAula Conversi

Investigation of rare nuclear processes in neodymium and osmium naturally occurring isotopes

Speaker: Dmytro Kasperovych
Institute for Nuclear Research of NASU, Kyiv, Ukraine

The experiments to search for rare decays of Os and Nd nuclides are carried out using low-background HPGe detectors at the Gran Sasso underground laboratory. The half-life of 150Nd relative to 2β decay to the 740.5-keV excited level of 150Sm was measured as 9.7-2.5+3.3×1019 yr. α decays of 184,186Os to the first excited levels of 180,182W were limited as T1/2 ≥ 6.8 × 1015 yr and ≥ 3.3 × 1017 yr, respectively. New limits on 2EC and ECβ+ processes have been obtained for 184Os, and the limit for 2β– decay of 192Os to the 316.5-keV level of 192Pt has been improved by 4 times. Both the experiments are in progress to improve sensitivity for the investigated processes.

--------------------------------------------------------------------------

Link zoom: https://uniroma1.zoom.us/j/87038625161?pwd=cEtGRjZNT2VWSlJIWmxaYmxSMDhRZz09#success