Abstract

Nuclear g-factors of isomeric bandheads in the transition nuclei 119I and 192Tl have been measured to be g[ 119 I( 9 2 +)] = 1.20(3) and g[ 192 Tl(8 −)] = 0.207(5) . These values are in agreement with a model of one or two quasiparticles coupled to a deformed core. This interpretation is also supported by a preliminary quadrupole moment determination of Q[ 192 Tl(8 −)] = 45(9) fm 2 . The lifetimes were remeasured to be T 1 2 = 34.6(5) ns and T 1 2 = 296(5) ns for the 119I and the 192Tl isomers, respectively.

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