$^{180}$Ta production in the s-process

摘要

The production and survival of the quasistable isomer $^{180}$Ta during the stellar nucleosynthesis has remained unexplained for years. A careful analysis of the available experimental data and theoretical calculations enabled us to reproduce the observed solar abundance of $^{180}$Ta in the classical s-process ($kT=28$ keV -- 33 keV).