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Quadrupole moments of wobbling excitations in Lu-163

Gorgen, A; Clark, RM; Cromaz, M; Fallon, P; Hagemann, GB; Hubel, H; Lee, IY; Macchiavelli, AO; Sletten, G and Ward, D, et al. (2004) In Physical Review C (Nuclear Physics) 69(3).
Abstract
Lifetimes of states in the triaxial strongly deformed bands of Lu-163 have been measured with the Gammasphere spectrometer using the Doppler-shift attenuation method. The bands have been interpreted as wobbling-phonon excitations from the characteristic electromagnetic properties of the transitions connecting the bands. Quadrupole moments are extracted for the zero-phonon yrast band and, for the first time, for the one-phonon wobbling band. The very similar results found for the two bands suggest a similar intrinsic structure and support the wobbling interpretation. While the in-band quadrupole moments for the bands show a decreasing trend towards higher spin, the ratio of the interband to the in-band transition strengths remains constant.... (More)
Lifetimes of states in the triaxial strongly deformed bands of Lu-163 have been measured with the Gammasphere spectrometer using the Doppler-shift attenuation method. The bands have been interpreted as wobbling-phonon excitations from the characteristic electromagnetic properties of the transitions connecting the bands. Quadrupole moments are extracted for the zero-phonon yrast band and, for the first time, for the one-phonon wobbling band. The very similar results found for the two bands suggest a similar intrinsic structure and support the wobbling interpretation. While the in-band quadrupole moments for the bands show a decreasing trend towards higher spin, the ratio of the interband to the in-band transition strengths remains constant. Both features can be understood by a small increase in triaxiality towards higher spin. Such a change in triaxiality is also found in cranking calculations, to which the experimental results are compared. (Less)
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publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
69
issue
3
publisher
American Physical Society
external identifiers
  • wos:000220607200001
  • scopus:2442562640
ISSN
0556-2813
DOI
10.1103/PhysRevC.69.031301
language
English
LU publication?
yes
id
88e25fdd-b060-4d39-ae4f-e0f04173db45 (old id 282050)
date added to LUP
2007-10-22 14:20:10
date last changed
2017-08-06 04:24:46
@article{88e25fdd-b060-4d39-ae4f-e0f04173db45,
  abstract     = {Lifetimes of states in the triaxial strongly deformed bands of Lu-163 have been measured with the Gammasphere spectrometer using the Doppler-shift attenuation method. The bands have been interpreted as wobbling-phonon excitations from the characteristic electromagnetic properties of the transitions connecting the bands. Quadrupole moments are extracted for the zero-phonon yrast band and, for the first time, for the one-phonon wobbling band. The very similar results found for the two bands suggest a similar intrinsic structure and support the wobbling interpretation. While the in-band quadrupole moments for the bands show a decreasing trend towards higher spin, the ratio of the interband to the in-band transition strengths remains constant. Both features can be understood by a small increase in triaxiality towards higher spin. Such a change in triaxiality is also found in cranking calculations, to which the experimental results are compared.},
  author       = {Gorgen, A and Clark, RM and Cromaz, M and Fallon, P and Hagemann, GB and Hubel, H and Lee, IY and Macchiavelli, AO and Sletten, G and Ward, D and Bengtsson, Ragnar},
  issn         = {0556-2813},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Quadrupole moments of wobbling excitations in Lu-163},
  url          = {http://dx.doi.org/10.1103/PhysRevC.69.031301},
  volume       = {69},
  year         = {2004},
}