title: First measurement of the partial widths of 209Bi decay to the ground and to the first excited states.
abstract: 209Bi alpha decay to the ground and to the first excited state have been recently observed for the first time with a large BGO scintillating bolometer. The half-life of 209Bi is determined to be τ(1/2)=(2.01±0.08)×10(19) yr while the branching ratio for the ground-state to ground-state transition is (98.8±0.3)%.
authors.affiliation: Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: J W
authors.initials: JW
authors.lastname: Beeman
authors.forename: M
authors.initials: M
authors.lastname: Biassoni
authors.forename: C
authors.initials: C
authors.lastname: Brofferio
authors.forename: C
authors.initials: C
authors.lastname: Bucci
authors.forename: S
authors.initials: S
authors.lastname: Capelli
authors.forename: L
authors.initials: L
authors.lastname: Cardani
authors.forename: M
authors.initials: M
authors.lastname: Carrettoni
authors.forename: M
authors.initials: M
authors.lastname: Clemenza
authors.forename: O
authors.initials: O
authors.lastname: Cremonesi
authors.forename: E
authors.initials: E
authors.lastname: Ferri
authors.forename: A
authors.initials: A
authors.lastname: Giachero
authors.forename: L
authors.initials: L
authors.lastname: Gironi
authors.forename: P
authors.initials: P
authors.lastname: Gorla
authors.forename: C
authors.initials: C
authors.lastname: Gotti
authors.forename: A
authors.initials: A
authors.lastname: Nucciotti
authors.forename: C
authors.initials: C
authors.lastname: Maiano
authors.forename: L
authors.initials: L
authors.lastname: Pattavina
authors.forename: M
authors.initials: M
authors.lastname: Pavan
authors.forename: G
authors.initials: G
authors.lastname: Pessina
authors.forename: S
authors.initials: S
authors.lastname: Pirro
authors.forename: E
authors.initials: E
authors.lastname: Previtali
authors.forename: M
authors.initials: M
authors.lastname: Sisti
authors.forename: L
authors.initials: L
authors.lastname: Zanotti