A new precision measurement of the α-decay half-life of 190Pt

Physics Letters B

Heinrich Wilsenach¹  Kai Zuber¹  Mihály Braun²  Yordan M. Georgiev³  Tommy Schönherr³ 

[1] Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany;Institute for Nuclear Research of the Hungarian Academy of Sciences, Bem tér 18, Debrecen, 4026 Hungary;Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany;

关键词: Alpha decay;    Natural radioactivity;    190Pt isotope;    Pt–Os dating system;   

DOI  :  10.1016/j.physletb.2017.02.052

来源: DOAJ

【 摘 要 】

A laboratory measurement of the α-decay half-life of 190Pt has been performed using a low background Frisch grid ionisation chamber. A total amount of 216.60(17) mg of natural platinum has been measured for 75.9 days. The resulting half-life is (4.97±0.16)×1011 years, with a total uncertainty of 3.2%. This number is in good agreement with the half-life obtained using the geological comparison method.

【 授权许可】

Unknown