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Neutron excitations across the N = 86 superdeformed shell gap

de France, G. ; Haas, B. ; Ragnarsson, I. LU ; Twin, P. J. ; Beausang, C. W. ; Beck, F. A. ; Byrski, T. ; Clarke, S. ; Curien, D. and Dagnall, P. J. , et al. (1994) In Physics Letters B 331(3-4). p.290-295
Abstract

Based on data obtained with the Eurogam spectrometer, a systematic investigation of superdeformed bands built on single neutron excitations across the N = 86 shell gap has been carried out for gadolinium, terbium, and dysprosium isotopes with 85 ≤ N ≤ 87. In each nucleus, pairs of bands corresponding to degenerate signature partners have been observed. The effective alignment is constant and close to zero for many of the bands, in agreement with cranked shell model calculations for the [402]5/2 and [514]9/2 orbitals. Several bands exhibit non-zero alignments, indicating in some cases the influence of pairing correlations even at high spin and in other cases the occupancy of the [521]3/2 orbital.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters B
volume
331
issue
3-4
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:0000514990
ISSN
0370-2693
DOI
10.1016/0370-2693(94)91054-5
language
English
LU publication?
yes
id
c8e79311-6ed8-4f8e-8853-827753015ec9
date added to LUP
2026-01-15 10:49:13
date last changed
2026-01-27 15:19:04
@article{c8e79311-6ed8-4f8e-8853-827753015ec9,
  abstract     = {{<p>Based on data obtained with the Eurogam spectrometer, a systematic investigation of superdeformed bands built on single neutron excitations across the N = 86 shell gap has been carried out for gadolinium, terbium, and dysprosium isotopes with 85 ≤ N ≤ 87. In each nucleus, pairs of bands corresponding to degenerate signature partners have been observed. The effective alignment is constant and close to zero for many of the bands, in agreement with cranked shell model calculations for the [402]5/2 and [514]9/2 orbitals. Several bands exhibit non-zero alignments, indicating in some cases the influence of pairing correlations even at high spin and in other cases the occupancy of the [521]3/2 orbital.</p>}},
  author       = {{de France, G. and Haas, B. and Ragnarsson, I. and Twin, P. J. and Beausang, C. W. and Beck, F. A. and Byrski, T. and Clarke, S. and Curien, D. and Dagnall, P. J. and Duchêne, G. and Fallon, P. and Flibotte, S. and Forbes, S. and Forsyth, P. D. and Kharraja, B. and Lisle, J. C. and Merdinger, J. C. and Petrache, C. M. and Prévost, D. and Sharpey-Schafer, J. F. and Simpson, J. and Vivien, J. P. and Zuber, K.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{3-4}},
  pages        = {{290--295}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{Neutron excitations across the N = 86 superdeformed shell gap}},
  url          = {{http://dx.doi.org/10.1016/0370-2693(94)91054-5}},
  doi          = {{10.1016/0370-2693(94)91054-5}},
  volume       = {{331}},
  year         = {{1994}},
}