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Rotational Bands in the Semi-magic Nucleus 57Ni

Rudolph, Dirk LU ; Ragnarsson, Ingemar LU ; Reviol, W.; Andreoiu, Corina LU ; Bentley, M. A.; Carpenter, M. P.; Charity, R. J.; Clark, R. M.; Cromaz, M. and Ekman, Jörgen LU , et al. (2010) In Journal of Physics G: Nuclear and Particle Physics 37(7).
Abstract
Two rotational bands have been identified and characterized in the proton-magic N = Z + 1 nucleus Ni-57. These bands complete the systematics of well-and superdeformed rotational bands in the light nickel isotopes starting from doubly magic Ni-56 to Ni-60. High-spin states in Ni-57 have been produced in the fusion-evaporation reaction Si-28(S-32, 2p1n)Ni-57 and studied with the gamma-ray detection array GAMMASPHERE operated in conjunction with detectors for evaporated light charged particles and neutrons. The features of the rotational bands in Ni-57 are compared to those of neighbouring isotopes and interpreted by means of configuration-dependent cranked Nilsson-Strutinsky calculations. The two observed high-spin bands are considered... (More)
Two rotational bands have been identified and characterized in the proton-magic N = Z + 1 nucleus Ni-57. These bands complete the systematics of well-and superdeformed rotational bands in the light nickel isotopes starting from doubly magic Ni-56 to Ni-60. High-spin states in Ni-57 have been produced in the fusion-evaporation reaction Si-28(S-32, 2p1n)Ni-57 and studied with the gamma-ray detection array GAMMASPHERE operated in conjunction with detectors for evaporated light charged particles and neutrons. The features of the rotational bands in Ni-57 are compared to those of neighbouring isotopes and interpreted by means of configuration-dependent cranked Nilsson-Strutinsky calculations. The two observed high-spin bands are considered signature partners and assigned to configurations with one 1g(9/2) proton and one 1g(9/2) neutron, resulting in an unambiguous understanding of the energetically favoured signature alpha = -1/2 band but a somewhat less satisfactory description of the signature alpha = +1/2 band. (Less)
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Journal of Physics G: Nuclear and Particle Physics
volume
37
issue
7
publisher
IOP Publishing
external identifiers
  • wos:000278285400026
  • scopus:77953105006
ISSN
0954-3899
DOI
10.1088/0954-3899/37/7/075105
language
English
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yes
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c8d21753-4a68-48e5-befc-99a919d15f0d (old id 1631850)
date added to LUP
2010-07-21 11:46:26
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@article{c8d21753-4a68-48e5-befc-99a919d15f0d,
  abstract     = {Two rotational bands have been identified and characterized in the proton-magic N = Z + 1 nucleus Ni-57. These bands complete the systematics of well-and superdeformed rotational bands in the light nickel isotopes starting from doubly magic Ni-56 to Ni-60. High-spin states in Ni-57 have been produced in the fusion-evaporation reaction Si-28(S-32, 2p1n)Ni-57 and studied with the gamma-ray detection array GAMMASPHERE operated in conjunction with detectors for evaporated light charged particles and neutrons. The features of the rotational bands in Ni-57 are compared to those of neighbouring isotopes and interpreted by means of configuration-dependent cranked Nilsson-Strutinsky calculations. The two observed high-spin bands are considered signature partners and assigned to configurations with one 1g(9/2) proton and one 1g(9/2) neutron, resulting in an unambiguous understanding of the energetically favoured signature alpha = -1/2 band but a somewhat less satisfactory description of the signature alpha = +1/2 band.},
  articleno    = {075105},
  author       = {Rudolph, Dirk and Ragnarsson, Ingemar and Reviol, W. and Andreoiu, Corina and Bentley, M. A. and Carpenter, M. P. and Charity, R. J. and Clark, R. M. and Cromaz, M. and Ekman, Jörgen and Fahlander, Claes and Fallon, P. and Ideguchi, E. and Macchiavelli, A. O. and Mineva, Milena and Sarantites, D. G. and Seweryniak, D. and Williams, S. J.},
  issn         = {0954-3899},
  language     = {eng},
  number       = {7},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics G: Nuclear and Particle Physics},
  title        = {Rotational Bands in the Semi-magic Nucleus 57Ni},
  url          = {http://dx.doi.org/10.1088/0954-3899/37/7/075105},
  volume       = {37},
  year         = {2010},
}