2019 Impact factor 2.176
Hadrons and Nuclei
Eur. Phys. J. A 7, 45-47

Half-lives of platinum isotopes from photoactivation

P. Mohr - C. Hutter - K. Vogt - J. Enders - T. Hartmann - S. Volz - A. Zilges

Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany

Received: 13 September 1999 Communicated by D. Schwalm

Abstract
The half-lives of the platinum isotopes 189,191,197Pt and of the 4-day isomer in $^{195{\rm {m}}}$Pt have been measured with high precision using the photoactivation technique. The $\gamma$-ray activity was counted over several half-lives with a high-purity germanium detector. The measured half-lives are: $T_{1/2}(^{189}{\rm {Pt}}) = 12.1 \pm 1.5$h; $T_{1/2}(^{191}{\rm {Pt}}) = 2.862 \pm 0.007$d; $T_{1/2}(^{197}{\rm {Pt}}) = 19.96 \pm 0.05$h; $T_{1/2}(^{195{\rm {m}}}{\rm {Pt}}) = 4.0104 \pm 0.0047$d.

PACS
21.10.Tg Lifetimes - 27.70.+q $150 \le A \le 189$ - 27.80.+w $190 \le A \le 219$


Copyright Società Italiana di Fisica, Springer-Verlag 2000