Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er : Calibrating the TSD/SD puzzle
(2012) Rutherford Centennial Conference on Nuclear Physics- Abstract
Transition quadrupole moments, Qt, of two ultrahigh-spin, collective structures in 154Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed 110Pd foil was bombarded by a beam of 48Ti ions at 215 MeV. The Qt for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in 154Er represent distinct exotic nuclear shapes, namely axial... (More)
Transition quadrupole moments, Qt, of two ultrahigh-spin, collective structures in 154Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed 110Pd foil was bombarded by a beam of 48Ti ions at 215 MeV. The Qt for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in 154Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q t 20 eb, and triaxial strongly deformed (TSD) with Qt ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, 157,158Er.
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- author
- organization
- publishing date
- 2012
- type
- Contribution to conference
- publication status
- published
- subject
- conference name
- Rutherford Centennial Conference on Nuclear Physics
- conference location
- Manchester, United Kingdom
- conference dates
- 2011-08-08 - 2011-08-12
- external identifiers
-
- scopus:84867942609
- DOI
- 10.1088/1742-6596/381/1/012066
- language
- English
- LU publication?
- yes
- id
- bb016310-5b56-4c86-92c1-5e16a1423f41
- date added to LUP
- 2023-12-13 19:47:14
- date last changed
- 2023-12-13 19:49:03
@misc{bb016310-5b56-4c86-92c1-5e16a1423f41,
abstract = {{<p>Transition quadrupole moments, Q<sub>t</sub>, of two ultrahigh-spin, collective structures in <sup>154</sup>Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed <sup>110</sup>Pd foil was bombarded by a beam of <sup>48</sup>Ti ions at 215 MeV. The Q<sub>t</sub> for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in <sup>154</sup>Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q <sub>t</sub> 20 eb, and triaxial strongly deformed (TSD) with Q<sub>t</sub> ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, <sup>157,158</sup>Er.</p>}},
author = {{Revill, J. P. and Paul, E. S. and Wang, X. and Riley, M. A. and Simpson, J. and Ollier, J. and Boston, A. J. and Carpenter, M. P. and Chiara, C. J. and Hoffman, C. and Janssens, R. V.F. and Kondev, F. G. and Lauritsen, T. and Nolan, P. J. and Rees, J. M. and Rigby, S. V. and Unsworth, C. and Zhu, S. and Ragnarsson, I.}},
language = {{eng}},
title = {{Relative quadrupole moments of exotic shapes at ultrahigh spin in <sup>154</sup>Er : Calibrating the TSD/SD puzzle}},
url = {{http://dx.doi.org/10.1088/1742-6596/381/1/012066}},
doi = {{10.1088/1742-6596/381/1/012066}},
year = {{2012}},
}