2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188735For r-process nucleosynthesis the beta decay rates for a number of neutron-rich intermediate heavy nuclei are calculated. The model for the beta strength function is able to reproduce the observed half~lives quite well.To be published in Pramana - Journal of Physics (Indian Academy of Sciences). 8 pages LaTeXAstrophysicstext