Hurst, A.M., Butler, P.A., Jenkins, D.G. et al. (43 more authors) (2007) Measurement of the sign of the spectroscopic quadrupole moment for the 21+ state in 70Se: no evidence for oblate shape. Physical Review Letters, 98 (7). Art. No. 072501. ISSN 1079-7114
Abstract
Using a method whereby molecular and atomic ions are independently selected, an isobarically pure beam of 70Se ions was postaccelerated to an energy of 206 MeV using REX-ISOLDE. Coulomb-excitation yields for states in the beam and target nuclei were deduced by recording deexcitation rays in the highly segmented MINIBALL -ray spectrometer in coincidence with scattered particles in a silicon detector. At these energies, the Coulomb-excitation yield for the first 2+ state is expected to be strongly sensitive to the sign of the spectroscopic quadrupole moment through the nuclear reorientation effect. Experimental evidence is presented here for a prolate shape for the first 2+ state in 70Se, reopening the question over whether there are, as reported earlier, deformed oblate shapes near to the ground state in the light selenium isotopes.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | York RAE Import |
Date Deposited: | 31 Jul 2009 12:50 |
Last Modified: | 31 Jul 2009 12:50 |
Published Version: | http://dx.doi.org/10.1103/PhysRevLett.98.072501 |
Status: | Published |
Publisher: | The American Physical Society. |
Identification Number: | 10.1103/PhysRevLett.98.072501 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:7285 |