Band structure in {sup 79}Y and the question of T=0 pairing
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- Joint Institute of Heavy Ion Research, Oak Ridge, Tennessee 37831 (United States)
- Department of Physics, University of Pittsburgh, Pittsburgh, Philadelphia 15260 (United States)
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- CCLRC, Daresbury Laboratory, Warrington WA4 4AD (United Kingdom)
Excited states in the N=Z+1 nucleus {sup 79}Y were identified using the reaction {sup 28}Si({sup 54}Fe,p2n){sup 79}Y at a 200 MeV beam energy and an experimental set up consisting of an array of Ge detectors and the Recoil Mass Spectrometer at Oak Ridge National Laboratory. With the help of additional {gamma}-{gamma} coincidence data obtained with Gammasphere, these {gamma}-rays were found to form a strongly-coupled rotational band with rigid-rotor-like behavior. Results of conventional Nilsson-Strutinsky cranked shell model calculations, which predict a deformation of {beta}{sub 2}{approx}0.4, are in excellent agreement with the properties of this band. Similar calculations for the neighboring N=Z and N=Z+1 nuclei are also in good agreement with experimental data. This suggests that the presence of the putative T=0 neutron-proton pairing does not significantly affect such simple observables as the moments of inertia of these bands at low spins.
- OSTI ID:
- 21208214
- Journal Information:
- AIP Conference Proceedings, Vol. 481, Issue 1; Conference: Nuclear structure 98 conference, Gatlinburg, TN (United States), 10-15 Aug 1998; Other Information: DOI: 10.1063/1.59547; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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