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Rotational structures and their evolution with spin in Gd-152

Campbell, D. B.; Laird, R. W.; Riley, M. A.; Simpson, J.; Kondev, F. G.; Hartley, D. J.; Janssens, R. V. F.; Brown, T. B.; Carpenter, M. P. and Fallon, P., et al. (2007) In Physical Review C (Nuclear Physics) 75(6).
Abstract
The fusion-evaporation reaction involving a 175 MeV S-36 beam and a Sn-124 target was performed, and the emitted gamma rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of Gd-152 were made in spite of the relative weakness of the alpha 4n exit channel, being only similar to 2% of the total fusion cross-section. The high-spin behavior of Gd-152 was compared with that of other N=88 nuclei. A striking similarity was observed with Dy-154 and it is therefore suggested that the angular-momentum-induced shape changes that take place in Dy-154 also occur in Gd-152 in the 30-40h spin range. This is supported by Cranked Nilsson-Strutinsky calculations which were used to interpret the high-spin bands. It... (More)
The fusion-evaporation reaction involving a 175 MeV S-36 beam and a Sn-124 target was performed, and the emitted gamma rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of Gd-152 were made in spite of the relative weakness of the alpha 4n exit channel, being only similar to 2% of the total fusion cross-section. The high-spin behavior of Gd-152 was compared with that of other N=88 nuclei. A striking similarity was observed with Dy-154 and it is therefore suggested that the angular-momentum-induced shape changes that take place in Dy-154 also occur in Gd-152 in the 30-40h spin range. This is supported by Cranked Nilsson-Strutinsky calculations which were used to interpret the high-spin bands. It is found that a better agreement between calculation and experiment is obtained if the Z=64 shell gap increases with a decreasing number of valence particles outside the doubly-closed Gd-146(64)82 nucleus. (Less)
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Physical Review C (Nuclear Physics)
volume
75
issue
6
publisher
American Physical Society
external identifiers
  • wos:000247625200022
  • scopus:34547267307
ISSN
0556-2813
DOI
10.1103/PhysRevC.75.064314
language
English
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yes
id
260b7aa0-563b-4c04-ac2f-38b5c016c4de (old id 646181)
date added to LUP
2007-12-11 10:16:03
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2017-01-01 06:56:23
@article{260b7aa0-563b-4c04-ac2f-38b5c016c4de,
  abstract     = {The fusion-evaporation reaction involving a 175 MeV S-36 beam and a Sn-124 target was performed, and the emitted gamma rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of Gd-152 were made in spite of the relative weakness of the alpha 4n exit channel, being only similar to 2% of the total fusion cross-section. The high-spin behavior of Gd-152 was compared with that of other N=88 nuclei. A striking similarity was observed with Dy-154 and it is therefore suggested that the angular-momentum-induced shape changes that take place in Dy-154 also occur in Gd-152 in the 30-40h spin range. This is supported by Cranked Nilsson-Strutinsky calculations which were used to interpret the high-spin bands. It is found that a better agreement between calculation and experiment is obtained if the Z=64 shell gap increases with a decreasing number of valence particles outside the doubly-closed Gd-146(64)82 nucleus.},
  articleno    = {064314},
  author       = {Campbell, D. B. and Laird, R. W. and Riley, M. A. and Simpson, J. and Kondev, F. G. and Hartley, D. J. and Janssens, R. V. F. and Brown, T. B. and Carpenter, M. P. and Fallon, P. and Fischer, S. M. and Lauritsen, T. and Nisius, D. and Ragnarsson, Ingemar},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Rotational structures and their evolution with spin in Gd-152},
  url          = {http://dx.doi.org/10.1103/PhysRevC.75.064314},
  volume       = {75},
  year         = {2007},
}