Abstract
Incomplete-fusion reactions have been used to study high-spin states in Tm171. Gamma rays and conversion electrons were measured using pulsed-beam conditions for enhanced isomer sensitivity. A Kπ=19/2+, three-quasiparticle isomer was identified, with a half-life of 1.7(2) μs. The faster than expected transition rates from the isomer can be understood as being due to a chance near-degeneracy, with mixing between the isomeric state and the Iπ=19/2+ member of the one-quasiparticle rotational band to which it decays. The implied mixing matrix element is 12(2) eV.
Original language | English |
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Article number | 044321 |
Journal | Physical Review C - Nuclear Physics |
Volume | 79 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Apr 2009 |