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Low-energy Coulomb excitation of Sr 96,98 beams

Clément, E.; Zielińska, M.; Péru, S.; Goutte, H.; Hilaire, S.; Görgen, A.; Korten, W.; Doherty, D. T.; Bastin, B. and Bauer, C., et al. (2016) In Physical Review C - Nuclear Physics 94(5).
Abstract

The structure of neutron-rich Sr96,98 nuclei was investigated by low-energy safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN, with the MINIBALL spectrometer. A rich set of transitional and diagonal E2 matrix elements, including those for non-yrast structures, has been extracted from the differential Coulomb-excitation cross sections. The results support the scenario of a shape transition at N=60, giving rise to the coexistence of a highly deformed prolate and a spherical configuration in Sr98, and are compared to predictions from several theoretical calculations. The experimental data suggest a significant contribution of the triaxal degree of freedom in the ground state of both isotopes. In addition,... (More)

The structure of neutron-rich Sr96,98 nuclei was investigated by low-energy safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN, with the MINIBALL spectrometer. A rich set of transitional and diagonal E2 matrix elements, including those for non-yrast structures, has been extracted from the differential Coulomb-excitation cross sections. The results support the scenario of a shape transition at N=60, giving rise to the coexistence of a highly deformed prolate and a spherical configuration in Sr98, and are compared to predictions from several theoretical calculations. The experimental data suggest a significant contribution of the triaxal degree of freedom in the ground state of both isotopes. In addition, experimental information on low-lying states in Rb98 has been obtained.

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Physical Review C - Nuclear Physics
volume
94
issue
5
publisher
American Physical Society
external identifiers
  • scopus:85000398844
  • wos:000388821800008
ISSN
0556-2813
DOI
10.1103/PhysRevC.94.054326
language
English
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yes
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ba5626f0-e88b-4f67-8e9e-cfa78dfef78a
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2016-12-19 08:51:17
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2017-11-12 04:27:21
@article{ba5626f0-e88b-4f67-8e9e-cfa78dfef78a,
  abstract     = {<p>The structure of neutron-rich Sr96,98 nuclei was investigated by low-energy safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN, with the MINIBALL spectrometer. A rich set of transitional and diagonal E2 matrix elements, including those for non-yrast structures, has been extracted from the differential Coulomb-excitation cross sections. The results support the scenario of a shape transition at N=60, giving rise to the coexistence of a highly deformed prolate and a spherical configuration in Sr98, and are compared to predictions from several theoretical calculations. The experimental data suggest a significant contribution of the triaxal degree of freedom in the ground state of both isotopes. In addition, experimental information on low-lying states in Rb98 has been obtained.</p>},
  articleno    = {054326},
  author       = {Clément, E. and Zielińska, M. and Péru, S. and Goutte, H. and Hilaire, S. and Görgen, A. and Korten, W. and Doherty, D. T. and Bastin, B. and Bauer, C. and Blazhev, A. and Bree, N. and Bruyneel, B. and Butler, P. A. and Butterworth, J. and Cederkäll, J. and Delahaye, P. and Dijon, A. and Ekström, A. and Fitzpatrick, C. and Fransen, C. and Georgiev, G. and Gernhäuser, R. and Hess, H. and Iwanicki, J. and Jenkins, D. G. and Larsen, A. C. and Ljungvall, J. and Lutter, R. and Marley, P. and Moschner, K. and Napiorkowski, P. J. and Pakarinen, J. and Petts, A. and Reiter, P. and Renstrøm, T. and Seidlitz, M. and Siebeck, B. and Siem, S. and Sotty, C. and Srebrny, J. and Stefanescu, I. and Tveten, G. M. and Van De Walle, J. and Vermeulen, M. and Voulot, D. and Warr, N. and Wenander, F. and Wiens, A. and De Witte, H. and Wrzosek-Lipska, K.},
  issn         = {0556-2813},
  language     = {eng},
  month        = {11},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review C - Nuclear Physics},
  title        = {Low-energy Coulomb excitation of Sr 96,98 beams},
  url          = {http://dx.doi.org/10.1103/PhysRevC.94.054326},
  volume       = {94},
  year         = {2016},
}