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Ultrahigh-spin spectroscopy of Er-159,Er-160: Observation of triaxial strongly deformed structures

Ollier, J. ; Simpson, J. ; Wang, X. ; Riley, M. A. ; Aguilar, A. ; Teal, C. ; Paul, E. S. ; Nolan, P. J. ; Petri, M. and Rigby, S. V. , et al. (2009) In Physical Review C (Nuclear Physics) 80(6).
Abstract
Three weakly populated high-spin rotational bands associated with the gamma decay of Er-159 and Er-160 were observed in fusion-evaporation reactions involving a beam of Ca-48 at an energy of 215 MeV incident on a Cd-116 target. The gamma decays were detected using the highly efficient Gammasphere spectrometer. The discovery of these bands, which extend discrete-line spectroscopy in these nuclei to ultrahigh spin of similar to 60h, is consistent with recent observations of high-spin collective structures in isotopes of Er, Yb, and Tm around N=90. Cranked Nilsson-Strutinsky calculations suggest that these bands may arise from well-deformed triaxial configurations with either positive or negative gamma deformation.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
80
issue
6
publisher
American Physical Society
external identifiers
  • wos:000273232700032
  • scopus:73849100962
ISSN
0556-2813
DOI
10.1103/PhysRevC.80.064322
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
id
63e706b3-1b36-4048-9da7-05a22a2d3576 (old id 1531499)
date added to LUP
2016-04-01 14:19:23
date last changed
2025-04-04 14:45:28
@article{63e706b3-1b36-4048-9da7-05a22a2d3576,
  abstract     = {{Three weakly populated high-spin rotational bands associated with the gamma decay of Er-159 and Er-160 were observed in fusion-evaporation reactions involving a beam of Ca-48 at an energy of 215 MeV incident on a Cd-116 target. The gamma decays were detected using the highly efficient Gammasphere spectrometer. The discovery of these bands, which extend discrete-line spectroscopy in these nuclei to ultrahigh spin of similar to 60h, is consistent with recent observations of high-spin collective structures in isotopes of Er, Yb, and Tm around N=90. Cranked Nilsson-Strutinsky calculations suggest that these bands may arise from well-deformed triaxial configurations with either positive or negative gamma deformation.}},
  author       = {{Ollier, J. and Simpson, J. and Wang, X. and Riley, M. A. and Aguilar, A. and Teal, C. and Paul, E. S. and Nolan, P. J. and Petri, M. and Rigby, S. V. and Thomson, J. and Unsworth, C. and Carpenter, M. P. and Janssens, R. V. F. and Kondev, F. G. and Lauritsen, T. and Zhu, S. and Hartley, D. J. and Darby, I. G. and Ragnarsson, Ingemar}},
  issn         = {{0556-2813}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C (Nuclear Physics)}},
  title        = {{Ultrahigh-spin spectroscopy of Er-159,Er-160: Observation of triaxial strongly deformed structures}},
  url          = {{http://dx.doi.org/10.1103/PhysRevC.80.064322}},
  doi          = {{10.1103/PhysRevC.80.064322}},
  volume       = {{80}},
  year         = {{2009}},
}