α -decay branching ratio of Pt180

Abstract

A study of the 180 Hg decay chain performed at the CERN-ISOLDE facility has allowed the ground-state-toground-state α decay of 180 Pt to be investigated. A more precise α-decay branching ratio of b α ( 180 Pt) = 0.52(5)% has been deduced. The reduced α-decay width calculated using the new value provides a more consistent picture of the systematics for J π = 0 + → 0 + ground-state-to-ground-state state α decays of neutron-deficient, eveneven platinum isotopes.

Laser-assisted decay spectroscopy for the ground states of Au180,182

“…This value was recently deduced in our study at ISOLDE[34], and deviates slightly from the value of 5140(10) keV reported in the 1966 work[35].…”

“…where b α ( 180 Pt) = 0.52(5)% [34] and N tot is the total number of a given isotope produced during the experiment. It is important to note that the direct production of 180 Pt is not possible in the experiment.…”