Deformations and Shape Changes in 81Y
(1994) In Zeitschrift für Physik A Hadrons and Nuclei 350(3). p.189-197- Abstract
- High spin states in Y-81 UP to the probable 33/2(+) and 29/2(-) yrast states have been measured via the reaction Ni-58(Si-28, alpha p), using the Cologne tandem accelerator. Directional correlations of oriented nuclei were determined and the level scheme was extended with lifetimes measured by means of DSA and recoil distance techniques. Reduced transition strengths inferred from lifetimes were consistent with the results of Hartree-Fock-Bogolyubov calculations, which predict a nearly axially symmetric deformation of beta(2) approximate to 0.37 for the pi = + band. Predictions reveal an alignment driving the system to a smaller and triaxial deformation with beta(2) = 0.23 and gamma = -30 degrees, although the data show this crossing to be... (More)
- High spin states in Y-81 UP to the probable 33/2(+) and 29/2(-) yrast states have been measured via the reaction Ni-58(Si-28, alpha p), using the Cologne tandem accelerator. Directional correlations of oriented nuclei were determined and the level scheme was extended with lifetimes measured by means of DSA and recoil distance techniques. Reduced transition strengths inferred from lifetimes were consistent with the results of Hartree-Fock-Bogolyubov calculations, which predict a nearly axially symmetric deformation of beta(2) approximate to 0.37 for the pi = + band. Predictions reveal an alignment driving the system to a smaller and triaxial deformation with beta(2) = 0.23 and gamma = -30 degrees, although the data show this crossing to be somewhat delayed. Particle-rotor calculations for the one-quasiparticle bands corroborate the predictions of deformation parameters based on the cranking model. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3963937
- author
- Johnson, T. D. ; Raguse, A. ; Gross, C. J. ; Kabadiyski, M. K. ; Lieb, K. P. ; Rudolph, Dirk LU ; Weiszflog, M. ; Burkardt, T. ; Eberth, J. and Skoda, S.
- organization
- publishing date
- 1994
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Zeitschrift für Physik A Hadrons and Nuclei
- volume
- 350
- issue
- 3
- pages
- 189 - 197
- publisher
- Springer
- external identifiers
-
- scopus:0002922232
- ISSN
- 0939-7922
- DOI
- 10.1007/BF01289582
- language
- English
- LU publication?
- no
- additional info
- 3
- id
- 90e74073-08f9-4600-aae6-12f62315e858 (old id 3963937)
- alternative location
- http://link.springer.com/article/10.1007/BF01289582
- date added to LUP
- 2016-04-01 16:50:47
- date last changed
- 2021-01-03 05:03:11
@article{90e74073-08f9-4600-aae6-12f62315e858, abstract = {{High spin states in Y-81 UP to the probable 33/2(+) and 29/2(-) yrast states have been measured via the reaction Ni-58(Si-28, alpha p), using the Cologne tandem accelerator. Directional correlations of oriented nuclei were determined and the level scheme was extended with lifetimes measured by means of DSA and recoil distance techniques. Reduced transition strengths inferred from lifetimes were consistent with the results of Hartree-Fock-Bogolyubov calculations, which predict a nearly axially symmetric deformation of beta(2) approximate to 0.37 for the pi = + band. Predictions reveal an alignment driving the system to a smaller and triaxial deformation with beta(2) = 0.23 and gamma = -30 degrees, although the data show this crossing to be somewhat delayed. Particle-rotor calculations for the one-quasiparticle bands corroborate the predictions of deformation parameters based on the cranking model.}}, author = {{Johnson, T. D. and Raguse, A. and Gross, C. J. and Kabadiyski, M. K. and Lieb, K. P. and Rudolph, Dirk and Weiszflog, M. and Burkardt, T. and Eberth, J. and Skoda, S.}}, issn = {{0939-7922}}, language = {{eng}}, number = {{3}}, pages = {{189--197}}, publisher = {{Springer}}, series = {{Zeitschrift für Physik A Hadrons and Nuclei}}, title = {{Deformations and Shape Changes in 81Y}}, url = {{http://dx.doi.org/10.1007/BF01289582}}, doi = {{10.1007/BF01289582}}, volume = {{350}}, year = {{1994}}, }