Title: Decay of mass-separated 3.0 min bi-195 to levels in pb-195 and shape coexistence in the neutron-deficient odd-mass pb isotopes
Authors: Griffin, Jc ×
Braga, Ra
Fink, Rw
Wood, Jl
Carter, Hk
Mlekodaj, Rl
Bingham, Cr
Coenen, E
Huyse, Marc
Van Duppen, Piet #
Issue Date: Aug-1991
Publisher: Elsevier science bv
Series Title: Nuclear Physics A vol:530 issue:2 pages:401-419
Abstract: The radioactive decay of mass-separated 3.0 m 195gBi to 195Pb has been studied with the UNISOR and LISOL facilities. Time-sequenced spectra of gamma-rays, X-rays, and conversion electrons have been obtained, together with gamma-gamma-t, gamma-Xt, e-gamma-t, and eXt coincidence data. From this information, a decay scheme has been constructed consisting of 23 excited states and 34 transitions in 195Pb. Transitions with E0 multipole admixtures, indicative of shape coexistence, have been found to de-excite positive-parity levels at 1093, 1329, and 1380 keV. The beta-decay energy of the 195Bi ground state is deduced to be Q(EC) = 4800(-550)+600 keV based on the measurement of gamma-ray-gated K/beta+-ratios. The excitation energy of the i13/2 isomer in 195Pb has been determined to be 203 +/- 4 keV from the alpha-decays of Po-199m,g.
ISSN: 0375-9474
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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