SU(3) coupling schemes for odd-odd nuclei in the interacting boson - fermion -
fermion model with both odd proton and
odd neutron in natural parity orbits
V.K.B. Kota1 - U. Datta Pramanik2
1 Physical Research Laboratory, Ahmedabad 380 009, India
2 Saha Institute of Nuclear Physics, Calcutta 700 064, India
Received: 22 June 1998 Communicated by P. Schuck
Abstract
The SUBFF(3) dynamical symmetry limits of interacting boson
- fermion - fermion model are identified and they are
appropriate for heavy deformed odd - odd nuclei for
configurations with both the odd proton and odd neutron
occupying all the natural parity orbits in the corresponding
valence shells. There are three symmetry limits and their
correspondence with two quasi-particle (proton-neutron) Nilsson
configurations is established; one of the limits mixes both
Nilsson nz's and 's and other two limits mix only
Nilsson
's. The 191Ir (d,t) 190Ir single
nucleon transfer spectroscopic strengths are well described by
one of the symmetry limits that mixes only Nilsson
's.
PACS
21.10.Jx Spectroscopic factors -
21.60.Ev Collective models -
21.60.Fw Models based on group theory -
27.80.+w
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