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Phys. Rev. C 58, R3037 - R3041 (1998)

Band structure in 79Y and the question of T=0 pairing
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S. D. Paul et al.
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Rapid Communication Received 27 August 1998

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.


©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v58/pR3037
DOI: 10.1103/PhysRevC.58.R3037
PACS: 21.10.Re, 21.60.-n, 23.20.Lv, 27.50.+e

* Present address: State University of New York, Stony Brook, NY 11794.
† Present address: Department of Physics, Lund University, S-22100 Lund, Sweden.

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