Physics Letters B (Jan 2015)
High-spin states beyond the proton drip-line: Quasiparticle alignments in 113Cs
- P.T. Wady,
- J.F. Smith,
- B. Hadinia,
- D.M. Cullen,
- S.J. Freeman,
- I.G. Darby,
- S. Eeckhaudt,
- T. Grahn,
- P.T. Greenlees,
- P.M. Jones,
- R. Julin,
- S. Juutinen,
- H. Kettunen,
- M. Leino,
- A.-P. Leppänen,
- B.M. McGuirk,
- P. Nieminen,
- M. Nyman,
- R.D. Page,
- J. Pakarinen,
- E.S. Paul,
- P. Rahkila,
- S.V. Rigby,
- C. Scholey,
- J. Uusitalo,
- R. Wadsworth
Affiliations
- P.T. Wady
- School of Engineering, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom; Scottish Universities Physics Alliance, United Kingdom
- J.F. Smith
- School of Engineering, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom; Scottish Universities Physics Alliance, United Kingdom; Corresponding author at: School of Engineering, University of the West of Scotland, Paisley Campus, Paisley, PA1 2BE Scotland, UK. Tel.: +44 141 848 3652; fax: +44 141 848 3663.
- B. Hadinia
- School of Engineering, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom; Scottish Universities Physics Alliance, United Kingdom
- D.M. Cullen
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom
- S.J. Freeman
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom
- I.G. Darby
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- S. Eeckhaudt
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- T. Grahn
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- P.T. Greenlees
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- P.M. Jones
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- R. Julin
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- S. Juutinen
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- H. Kettunen
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- M. Leino
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- A.-P. Leppänen
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- B.M. McGuirk
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- P. Nieminen
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- M. Nyman
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- R.D. Page
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J. Pakarinen
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- E.S. Paul
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- P. Rahkila
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- S.V. Rigby
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom
- C. Scholey
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- J. Uusitalo
- Department of Physics, University of Jyväskylä, FIN-40014, Jyväskylä, Finland
- R. Wadsworth
- Department of Physics, University of York, Heslington, YO10 5DD, United Kingdom
- Journal volume & issue
-
Vol. 740
pp. 243 – 249
Abstract
Excited states have been studied in the deformed proton emitter 113Cs. Gamma-ray transitions have been unambiguously assigned to 113Cs by correlation with its characteristic proton decay, using the method of recoil-decay tagging. Two previously identified rotational bands have been observed and extended to tentative spins of 45/2 and 51/2ħ, with excitation energies over 8 MeV above the lowest state. These are the highest angular momenta and excitation energies observed to date in any nucleus beyond the proton drip-line. Transitions in the bands have been rearranged compared to previous work. A study of aligned angular momenta, in comparison to the predictions of Woods–Saxon cranking calculations, is consistent with the most intense band being based on the πg7/2[422]3/2+ configuration, which would contradict the earlier πh11/2 assignment, and with the second band being based on the πd5/2[420]1/2+ configuration. The data suggest that the band based upon the πh11/2 configuration is not observed. Keywords: Proton decay, Recoil-decay tagging, Gamma-ray spectroscopy, High-spin states, Quasiparticle alignments
