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Do nuclei go pear-shaped? Coulomb excitation of Rn-220 and Ra-224 at REX-ISOLDE (CERN)

Scheck, M.; Gaffney, L. P.; Butler, P. A.; Hayes, A. B.; Wenander, F.; Albers, M.; Bastin, B.; Bauer, C.; Blazhev, A. and Boenig, S., et al. (2015) 15th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS) In Cgs15 - Capture Gamma-ray Spectroscopy and Related Topics 93. p.01038-01038
Abstract
The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive Rn-220 and Ra-224 beams at the REX-ISOLDE facility. The beam particles (E-beam: 2.83 MeV/u) were Coulomb excited using Ni-60, Cd-14, and Sn-120 scattering targets. De-excitation gamma-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured gamma-ray yields. The extracted < 3 parallel to E3 parallel to 0(+)> matrix element allows for the conclusion that, while Rn-220 represents an octupole vibrational system, Ra-224 has already substantial octupole correlations in... (More)
The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive Rn-220 and Ra-224 beams at the REX-ISOLDE facility. The beam particles (E-beam: 2.83 MeV/u) were Coulomb excited using Ni-60, Cd-14, and Sn-120 scattering targets. De-excitation gamma-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured gamma-ray yields. The extracted < 3 parallel to E3 parallel to 0(+)> matrix element allows for the conclusion that, while Rn-220 represents an octupole vibrational system, Ra-224 has already substantial octupole correlations in its ground state. This finding has i(m)plications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei. (Less)
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Chapter in Book/Report/Conference proceeding
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published
subject
in
Cgs15 - Capture Gamma-ray Spectroscopy and Related Topics
volume
93
pages
01038 - 01038
publisher
EDP Sciences
conference name
15th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS)
external identifiers
  • wos:000358307500038
  • scopus:84960434780
ISSN
2100-014X
2101-6275
DOI
10.1051/epjconf/20159301038
language
English
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yes
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5dedba9f-3fb5-4e68-8cb9-f0248fd1b73b (old id 7773527)
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2015-09-07 13:43:03
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2017-01-01 03:03:22
@inproceedings{5dedba9f-3fb5-4e68-8cb9-f0248fd1b73b,
  abstract     = {The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive Rn-220 and Ra-224 beams at the REX-ISOLDE facility. The beam particles (E-beam: 2.83 MeV/u) were Coulomb excited using Ni-60, Cd-14, and Sn-120 scattering targets. De-excitation gamma-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured gamma-ray yields. The extracted &lt; 3 parallel to E3 parallel to 0(+)&gt; matrix element allows for the conclusion that, while Rn-220 represents an octupole vibrational system, Ra-224 has already substantial octupole correlations in its ground state. This finding has i(m)plications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei.},
  author       = {Scheck, M. and Gaffney, L. P. and Butler, P. A. and Hayes, A. B. and Wenander, F. and Albers, M. and Bastin, B. and Bauer, C. and Blazhev, A. and Boenig, S. and Bree, N. and Cederkäll, Joakim and Chupp, T. and Cline, D. and Cocolios, T. E. and Davinson, T. and De Witte, H. and Diriken, J. and Grahn, T. and Herzan, A. and Huyse, M. and Jenkins, D. G. and Joss, D. T. and Kesteloot, N. and Konki, J. and Kowalczyk, M. and Kroell, Th. and Kwan, E. and Lutter, R. and Moschner, K. and Napiorkowski, P. and Pakarinen, J. and Pfeiffer, M. and Radeck, D. and Reiter, P. and Reynders, K. and Rigby, S. V. and Robledo, L. M. and Rudigier, M. and Sambi, S. and Seidlitz, M. and Siebeck, B. and Stora, T. and Thoele, P. and Van Duppen, P. and Vermeulen, M. J. and von Schmid, M. and Voulot, D. and Warr, N. and Wimmer, K. and Wrzosek-Lipska, K. and Wu, C. Y. and Zielinska, M.},
  booktitle    = {Cgs15 - Capture Gamma-ray Spectroscopy and Related Topics},
  issn         = {2100-014X},
  language     = {eng},
  pages        = {01038--01038},
  publisher    = {EDP Sciences},
  title        = {Do nuclei go pear-shaped? Coulomb excitation of Rn-220 and Ra-224 at REX-ISOLDE (CERN)},
  url          = {http://dx.doi.org/10.1051/epjconf/20159301038},
  volume       = {93},
  year         = {2015},
}