Pair truncation for rotational nuclei: j =(17/2 model
- Department of Physics, University of Arizona, Tucson, Arizona 85721 (US)
The suitability of the pair condensate approach for rotational states is studied in a single {ital j}=17/2 shell of identical nucleons interacting through a quadrupole-quadrupole Hamiltonian. The ground band and a {ital K}=2 excited band are both studied in detail. A direct comparison of the exact states with those constituting the {ital SD} and {ital SDG} subspaces is used to identify the important degrees of freedom for these levels. The range of pairs necessary for a good description is found to be highly state dependent; {ital S} and {ital D} pairs are the major constituents of the low-spin ground-band levels, while {ital G} pairs are needed for those in the {gamma} band. Energy spectra are obtained for each truncated subspace. {ital SDG} pairs allow accurate reproduction of the binding energy and {ital K}=2 excitation energy, but still give a moment of inertia which is about 30% too small even for the lowest levels.
- OSTI ID:
- 5466804
- Journal Information:
- Physical Review (Section) C: Nuclear Physics; (USA), Vol. 40:2; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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