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Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams

Butler, P. A. ; Gaffney, L. P. ; Spagnoletti, P. ; Abrahams, K. ; Bowry, M. ; Cederkäll, J. LU ; de Angelis, G. ; De Witte, H. ; Garrett, P. E. and Goldkuhle, A. , et al. (2020) In Physical Review Letters 124(4).
Abstract

There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
124
issue
4
pages
1 pages
publisher
American Physical Society
external identifiers
  • pmid:32058764
  • scopus:85079514926
ISSN
1079-7114
DOI
10.1103/PhysRevLett.124.042503
language
English
LU publication?
yes
id
9fb9ab8d-b2d9-4bba-b031-8e52b239dc94
date added to LUP
2020-02-28 21:22:10
date last changed
2021-04-13 01:22:46
@article{9fb9ab8d-b2d9-4bba-b031-8e52b239dc94,
  abstract     = {<p>There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.</p>},
  author       = {Butler, P. A. and Gaffney, L. P. and Spagnoletti, P. and Abrahams, K. and Bowry, M. and Cederkäll, J. and de Angelis, G. and De Witte, H. and Garrett, P. E. and Goldkuhle, A. and Henrich, C. and Illana, A. and Johnston, K. and Joss, D. T. and Keatings, J. M. and Kelly, N. A. and Komorowska, M. and Konki, J. and Kröll, T. and Lozano, M. and Nara Singh, B. S. and O'Donnell, D. and Ojala, J. and Page, R. D. and Raison, C. and Reiter, P. and Rosiak, D. and Rothe, S. and Scheck, M. and Seidlitz, M. and Shneidman, T. M. and Siebeck, B. and Sinclair, J. and Smith, J. F. and Stryjczyk, M. and Van Duppen, P. and Vinals, S. and Virtanen, V. and Warr, N. and Wrzosek-Lipska, K. and Zielińska, M.},
  issn         = {1079-7114},
  language     = {eng},
  month        = {01},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.124.042503},
  doi          = {10.1103/PhysRevLett.124.042503},
  volume       = {124},
  year         = {2020},
}