title: Anomalous isomeric decays in 174Lu as a probe of K mixing and interactions in deformed nuclei.
abstract: A K(pi)=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus 174Lu has been identified and characterized. The isomer decays to both K(pi)=7(+) and K(pi)=0(+) rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing the mixing matrix element for a large K difference to be deduced.
authors.affiliation: Department of Nuclear Physics, R.S. Phys. S.E., Australian National University, Canberra, A.C.T. 0200 Australia.
authors.forename: G D
authors.initials: GD
authors.lastname: Dracoulis
authors.forename: F G
authors.initials: FG
authors.lastname: Kondev
authors.forename: G J
authors.initials: GJ
authors.lastname: Lane
authors.forename: A P
authors.initials: AP
authors.lastname: Byrne
authors.forename: T R
authors.initials: TR
authors.lastname: McGoram
authors.forename: T
authors.initials: T
authors.lastname: Kibédi
authors.forename: I
authors.initials: I
authors.lastname: Ahmad
authors.forename: M P
authors.initials: MP
authors.lastname: Carpenter
authors.forename: R V F
authors.initials: RV
authors.lastname: Janssens
authors.forename: T
authors.initials: T
authors.lastname: Lauritsen
authors.forename: C J
authors.initials: CJ
authors.lastname: Lister
authors.forename: D
authors.initials: D
authors.lastname: Seweryniak
authors.forename: P
authors.initials: P
authors.lastname: Chowdhury
authors.forename: S K
authors.initials: SK
authors.lastname: Tandel