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Ultrahigh-spin spectroscopy of Er-159,Er-160: Observation of triaxial strongly deformed structures
- Ollier, J. (author)
- Simpson, J. (author)
- Wang, X. (author)
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- Riley, M. A. (author)
- Aguilar, A. (author)
- Teal, C. (author)
- Paul, E. S. (author)
- Nolan, P. J. (author)
- Petri, M. (author)
- Rigby, S. V. (author)
- Thomson, J. (author)
- Unsworth, C. (author)
- Carpenter, M. P. (author)
- Janssens, R. V. F. (author)
- Kondev, F. G. (author)
- Lauritsen, T. (author)
- Zhu, S. (author)
- Hartley, D. J. (author)
- Darby, I. G. (author)
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- (creator_code:org_t)
- 2009
- 2009
- English.
- In: Physical Review C (Nuclear Physics). - 0556-2813. ; 80:6
- Journal article (peer-reviewed)
Abstract
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- Three weakly populated high-spin rotational bands associated with the gamma decay of Er-159 and Er-160 were observed in fusion-evaporation reactions involving a beam of Ca-48 at an energy of 215 MeV incident on a Cd-116 target. The gamma decays were detected using the highly efficient Gammasphere spectrometer. The discovery of these bands, which extend discrete-line spectroscopy in these nuclei to ultrahigh spin of similar to 60h, is consistent with recent observations of high-spin collective structures in isotopes of Er, Yb, and Tm around N=90. Cranked Nilsson-Strutinsky calculations suggest that these bands may arise from well-deformed triaxial configurations with either positive or negative gamma deformation.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- ref (subject category)
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- Ollier, J.
- Simpson, J.
- Wang, X.
- Riley, M. A.
- Aguilar, A.
- Teal, C.
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- Paul, E. S.
- Nolan, P. J.
- Petri, M.
- Rigby, S. V.
- Thomson, J.
- Unsworth, C.
- Carpenter, M. P.
- Janssens, R. V. ...
- Kondev, F. G.
- Lauritsen, T.
- Zhu, S.
- Hartley, D. J.
- Darby, I. G.
- Ragnarsson, Inge ...
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