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Interpretation of the large-deformation high-spin bands in select A=158-168 nuclei

Kardan, A.; Ragnarsson, Ingemar LU ; Miri-Hakimabad, H. and Rafat-Motevali, L. (2012) In Physical Review C (Nuclear Physics) 86(1).
Abstract
The high-spin rotational bands in Hf-168 and the triaxial bands in Lu nuclei are analyzed using the configuration-constrained cranked Nilsson-Strutinsky (CNS) model. Special attention is given to the up-sloping extruder orbitals. The relative alignment between the bands which appear to correspond to triaxial shape is also considered, including the yrast ultrahigh-spin band in Er-158. This comparison suggests that the latter band is formed from rotation around the intermediate axis. In addition, the standard approximations of the CNS approach are investigated, indicating that the errors which are introduced by the neglect of off-shell matrix elements and the cutoff at nine oscillator shells (N-max = 8) are essentially negligible compared to... (More)
The high-spin rotational bands in Hf-168 and the triaxial bands in Lu nuclei are analyzed using the configuration-constrained cranked Nilsson-Strutinsky (CNS) model. Special attention is given to the up-sloping extruder orbitals. The relative alignment between the bands which appear to correspond to triaxial shape is also considered, including the yrast ultrahigh-spin band in Er-158. This comparison suggests that the latter band is formed from rotation around the intermediate axis. In addition, the standard approximations of the CNS approach are investigated, indicating that the errors which are introduced by the neglect of off-shell matrix elements and the cutoff at nine oscillator shells (N-max = 8) are essentially negligible compared to other uncertainties. On the other hand, the full inclusion of the hexadecapole degree of freedom is more significant; for example it leads to a decrease of the total energy of similar to 500 keV in the triaxial superdeformed (TSD) region of Hf-168. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
86
issue
1
publisher
American Physical Society
external identifiers
  • wos:000306190600001
  • scopus:84864410985
ISSN
0556-2813
DOI
10.1103/PhysRevC.86.014309
language
English
LU publication?
yes
id
910ef7be-836e-45da-843c-21be15857863 (old id 2991656)
date added to LUP
2012-08-22 13:24:43
date last changed
2017-10-08 03:57:48
@article{910ef7be-836e-45da-843c-21be15857863,
  abstract     = {The high-spin rotational bands in Hf-168 and the triaxial bands in Lu nuclei are analyzed using the configuration-constrained cranked Nilsson-Strutinsky (CNS) model. Special attention is given to the up-sloping extruder orbitals. The relative alignment between the bands which appear to correspond to triaxial shape is also considered, including the yrast ultrahigh-spin band in Er-158. This comparison suggests that the latter band is formed from rotation around the intermediate axis. In addition, the standard approximations of the CNS approach are investigated, indicating that the errors which are introduced by the neglect of off-shell matrix elements and the cutoff at nine oscillator shells (N-max = 8) are essentially negligible compared to other uncertainties. On the other hand, the full inclusion of the hexadecapole degree of freedom is more significant; for example it leads to a decrease of the total energy of similar to 500 keV in the triaxial superdeformed (TSD) region of Hf-168.},
  articleno    = {014309},
  author       = {Kardan, A. and Ragnarsson, Ingemar and Miri-Hakimabad, H. and Rafat-Motevali, L.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Interpretation of the large-deformation high-spin bands in select A=158-168 nuclei},
  url          = {http://dx.doi.org/10.1103/PhysRevC.86.014309},
  volume       = {86},
  year         = {2012},
}