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Band Structure in 79Y and the Question of T=O Pairing

Paul, S. D.; Baktash, C.; Satula, W.; Gross, C. J.; Birriel, I.; Clark, R. M.; Cunningham, R. A.; Devlin, M.; Fallon, P. and Galindo-Uribarri, A., et al. (1998) In Physical Review C (Nuclear Physics) 58(6). p.3037-3041
Abstract
Gamma rays in the N=Z + 1 nucleus Y-79 were identified using the reaction Si-28(Fe-54, p2n)Y-79 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 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(2)similar to 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.... (More)
Gamma rays in the N=Z + 1 nucleus Y-79 were identified using the reaction Si-28(Fe-54, p2n)Y-79 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 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(2)similar to 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. [S0556-2813(98)50612-7]. (Less)
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Physical Review C (Nuclear Physics)
volume
58
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6
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3037 - 3041
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American Physical Society
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0556-2813
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10.1103/PhysRevC.58.R3037
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English
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@article{0dedc858-2f85-4df7-b421-3b0912d4f69f,
  abstract     = {Gamma rays in the N=Z + 1 nucleus Y-79 were identified using the reaction Si-28(Fe-54, p2n)Y-79 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 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(2)similar to 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. [S0556-2813(98)50612-7].},
  author       = {Paul, S. D. and Baktash, C. and Satula, W. and Gross, C. J. and Birriel, I. and Clark, R. M. and Cunningham, R. A. and Devlin, M. and Fallon, P. and Galindo-Uribarri, A. and Ginter, T. and Lafosse, D. R. and Kay, J. and Lerma, F. and Lee, I. Y. and Leyland, C. and Macchiavelli, A. O. and MacDonald, B. D. and Metcalfe, S. J. and Piechaczek, A. and Radford, D. C. and Reviol, W. and Riedinger, L. L. and Rudolph, Dirk and Rykaczewski, K. and Sarantites, D. G. and Saladin, J. X. and Shapira, D. and Sylvan, G. N. and Tabor, S. L. and Toth, K. S. and Weintraub, W. and Winchell, D. F. and Wood, V. Q. and Wyss, R. and Yu, C. H.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  pages        = {3037--3041},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Band Structure in 79Y and the Question of T=O Pairing},
  url          = {http://dx.doi.org/10.1103/PhysRevC.58.R3037},
  volume       = {58},
  year         = {1998},
}