Abstract
The decays of the isomers, and , have been investigated using Ge(Li) detectors in a variety of singles and coincidence configurations. Improved conversion coefficients were obtained for two of the transitions following the decay of , but no new, weak transitions were seen. Considerable improvement and enlargement of the decay scheme was possible. We have been able to make unambiguous multipolarity assignments for 15 of the 18 transitions following its decay and to place all 18 in a consistent decay scheme. States in were established (following the 90.5% isomeric-transition decay) at 0 (), 960.70 (), and 1382.82 (), 1623.1 (), 1915.2 (), 2040.3 (), and 2169.8 keV (). Those in (following the 9.5% electron-capture decay) lie at 0 (), 490.47 (), 950.19 (), 1098.7 (, , ), 1340.1 (), 1552.1 ( []), and 1675.6 keV (, ). Interpretation is made concerning the nature of the states in and even-even Pb isotopes and also in and odd-odd Tl isotopes on the basis of the simple shell-model plus pairing forces.
- Received 17 February 1972
DOI:https://doi.org/10.1103/PhysRevC.5.2107
©1972 American Physical Society