Bi209 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 Bi209 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)%
Beeman, J., Biassoni, M., Brofferio, C., Bucci, C., Capelli, S., Cardani, L., et al. (2012). First Measurement of the Partial Widths of Bi209 Decay to the Ground and to the First Excited States. PHYSICAL REVIEW LETTERS, 108(6), 062501-1-062501-5 [10.1103/PhysRevLett.108.062501].
First Measurement of the Partial Widths of Bi209 Decay to the Ground and to the First Excited States
BIASSONI, MATTEO;BROFFERIO, CHIARA;CAPELLI, SILVIA;CARRETTONI, MARCO ANDREA;CLEMENZA, MASSIMILIANO;Cremonesi, O;FERRI, ELENA;GIACHERO, ANDREA;GIRONI, LUCA;GOTTI, CLAUDIO;NUCCIOTTI, ANGELO ENRICO LODOVICO;MAIANO, CECILIA GIOVANNA;PATTAVINA, LUCA MARIA;PAVAN, MAURA;Pessina, G;Previtali, E;SISTI, MONICA;ZANOTTI, LUIGI ERNESTO
2012
Abstract
Bi209 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 Bi209 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)%
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