Band structure in [Formula Presented] and the question of [Formula Presented] pairing

S. D. Paul, C. Baktash, W. Satuła, C. J. Gross, I. Birriel, R. M. Clark, R. A. Cunningham, M. Devlin, P. Fallon, A. Galindo-Uribarri, T. Ginter, D. R. Lafosse, J. Kay, F. Lerma, I. Y. Lee, C. Leyland, A. O. Macchiavelli, B. D. MacDonald, S. J. Metcalfe, A. PiechaczekD. C. Radford, W. Reviol, L. L. Riedinger, D. Rudolph, K. Rykaczewski, D. G. Sarantites, J. X. Saladin, D. Shapira, G. N. Sylvan, S. L. Tabor, K. S. Toth, W. Weintraub, D. F. Winchell, V. Q. Wood, R. Wyss, C. H. Yu

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Abstract

Gamma rays in the [Formula Presented] nucleus [Formula Presented] were identified using the reaction [Formula Presented] 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 [Formula Presented] are in excellent agreement with the properties of this band. Similar calculations for the neighboring [Formula Presented] and [Formula Presented] nuclei are also in good agreement with experimental data. This suggests that the presence of the putative [Formula Presented] neutron-proton pairing does not significantly affect such simple observables as the moments of inertia of these bands at low spins.

Original languageEnglish
Pages (from-to)R3037-R3041
JournalPhysical Review C - Nuclear Physics
Volume58
Issue number6
DOIs
StatePublished - 1998

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