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Physical Review Letters 100 (2008) 052501
Partial conservation of seniority and nuclear isomerism
P. Van Isacker1, S. Heinze2

We point out the possibility of the {\em partial} conservation of the seniority quantum number when most eigenstates are mixed in seniority but some remain pure. This situation occurs in nuclei for the $g_{9/2}$ and $h_{9/2}$ shells where it is at the origin of the existence of seniority isomers in the ruthenium and palladium isotopes. It also occurs for $f$ bosons.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
2 :  Institute of Nuclear Physics
Physique/Physique Nucléaire Théorique
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