抄録
From experimental and historical points of view, the author reviews his works on the technical development for isotopic studies on ultra-micro amounts of noble gases, and the determination of 130Te double beta-decay half-life, which enables us to date hydrothermal deposits, in particular for gold telluride minerals. In addition, he describes his experiences of terrestrial and extraterrestrial noble-gas studies, and founding a new SIMS-laboratory in Kyushu University for extraterrestrial samples as well.
