α-decay branching ratio of 180Pt

A study of the 180Hg decay chain performed at the CERN-ISOLDE facility has allowed the ground-state–to–ground-state α decay of 180Pt to be investigated. A more precise α-decay branching ratio of bα (180Pt) = 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 Jπ = 0+ → 0+ ground-state–to–ground-state state α decays of neutron-deficient, even-even platinum isotopes.