Band structure in79Yand the question ofT=0pairing
Abstract
Gamma rays in the N=Z+1 nucleus 79Y were identified using the reaction 28Si(54Fe,p2n)79Y at a 200 MeV beam energy and an experimental setup consisting of an array of Ge detectors and the Recoil Mass Spectrometer at Oak Ridge National Laboratory. With the help of additional γ-γ coincidence data obtained with Gammasphere, these γ 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 β2∼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.
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274404
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274404
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10.1103/physrevc.58.r3037
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