β-decay half-lives of neutron-rich nuclei around ~(158)Nd, relevant to the formation of the A≈165 rare-earth element peak

摘要

A β-decay spectroscopy experiment around ~(158) Nd was performed at RI Beam Factory (RIBF), RIKEN Nishina Center, in order to understand the production mechanism of the A≈165 rare-earth element (REE) peak in the r-process mass abundance pattern. In this experiment, 53 half-lives are measured including 34 new results, which could be employed in a fully dynamic r-process network calculation.