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Rotational Bands in 77Rb: Spectroscopy Near the Z=38 Deformed Shell Gap

Harder, A.; Jungclaus, A.; Kabadiyski, M. K.; Kast, D.; Lieb, K. P.; Rudolph, Dirk LU ; Weiszflog, M.; Johnson, T. D.; Winter, G. and Gross, C. J., et al. (1997) In Physical Review C (Nuclear Physics) 55(4). p.1680-1696
Abstract
The gamma decays of high spin states in Rb-77 populated in the reaction Ca-40(Ca-40,3p) Rb-77 were studied with the EUROGAM I gamma-ray spectrometer at Daresburp Laboratory, in conjunction with the recoil mass separator. The data were used to extend or establish three positive parity and five negative parity bands in Rb-77. Levei lifetimes and sidefeeding times were then measured with the NORDBALL gamma-ray spectrometer, using the Doppler shift attenuation method, A very detailed level scheme including many weakly populated states was established and the bands were observed over large spin ranges. The deduced lifetimes demonstrate the high collectivity of the excited states and are consistent with their having large prolate deformations.... (More)
The gamma decays of high spin states in Rb-77 populated in the reaction Ca-40(Ca-40,3p) Rb-77 were studied with the EUROGAM I gamma-ray spectrometer at Daresburp Laboratory, in conjunction with the recoil mass separator. The data were used to extend or establish three positive parity and five negative parity bands in Rb-77. Levei lifetimes and sidefeeding times were then measured with the NORDBALL gamma-ray spectrometer, using the Doppler shift attenuation method, A very detailed level scheme including many weakly populated states was established and the bands were observed over large spin ranges. The deduced lifetimes demonstrate the high collectivity of the excited states and are consistent with their having large prolate deformations. The structures of the bands and their crossings are discussed in relation to the large shell gap at prolate deformation beta(2) approximate to 0.4. (Less)
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Physical Review C (Nuclear Physics)
volume
55
issue
4
pages
1680 - 1696
publisher
American Physical Society
external identifiers
  • scopus:0031506937
ISSN
0556-2813
DOI
10.1103/PhysRevC.55.1680
language
English
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no
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17d9aa99-2c12-4941-925c-86c4749bd85c (old id 3963829)
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http://link.aps.org/doi/10.1103/PhysRevC.55.1680
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2013-08-13 18:49:47
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@article{17d9aa99-2c12-4941-925c-86c4749bd85c,
  abstract     = {The gamma decays of high spin states in Rb-77 populated in the reaction Ca-40(Ca-40,3p) Rb-77 were studied with the EUROGAM I gamma-ray spectrometer at Daresburp Laboratory, in conjunction with the recoil mass separator. The data were used to extend or establish three positive parity and five negative parity bands in Rb-77. Levei lifetimes and sidefeeding times were then measured with the NORDBALL gamma-ray spectrometer, using the Doppler shift attenuation method, A very detailed level scheme including many weakly populated states was established and the bands were observed over large spin ranges. The deduced lifetimes demonstrate the high collectivity of the excited states and are consistent with their having large prolate deformations. The structures of the bands and their crossings are discussed in relation to the large shell gap at prolate deformation beta(2) approximate to 0.4.},
  author       = {Harder, A. and Jungclaus, A. and Kabadiyski, M. K. and Kast, D. and Lieb, K. P. and Rudolph, Dirk and Weiszflog, M. and Johnson, T. D. and Winter, G. and Gross, C. J. and Cunningham, R. A. and Gelletly, W. and Simpson, J. and Warner, D. D. and Bearden, I. G. and Shizuma, T. and Sletten, G. and Foltescu, D. and Roth, H. A. and Skeppstedt, O. and Varley, B. J.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {4},
  pages        = {1680--1696},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Rotational Bands in 77Rb: Spectroscopy Near the Z=38 Deformed Shell Gap},
  url          = {http://dx.doi.org/10.1103/PhysRevC.55.1680},
  volume       = {55},
  year         = {1997},
}