Spectroscopy of 40Ca and negative-parity bands |
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| Authors: | S. Torilov S. Thummerer W. von Oertzen Tz Kokalova G. de Angelis H. G. Bohlen A. Tumino M. Axiotis E. Farnea N. Marginean T. Martinez D. R. Napoli M. De Poli S. M. Lenzi C. Ur M. Rousseau P. Papka |
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| Affiliation: | (1) Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany;(2) Hahn-Meitner-Institut Berlin, Glienicker Strasse 100, D-14109 Berlin, Germany;(3) INFN-Laboratori Nazionali del Sud and Universitá di Catania, Via S. Sofia 44, I-95123 Catania, Italy;(4) INFN-Laboratori Nazionali di Legnaro, Legnaro, Italy;(5) Dipartimento di Fisica and INFN, Padova, Italy;(6) Institut de Recherches Subatomiques, IReS, Strasbourg, France |
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| Abstract: | We have studied the reactions  as well as the binary channel  , in order to search for deformed states, which form rotational bands in 40Ca. We observe positive- and negative-parity bands. The negative-parity band is proposed to be a partner of an inversion doublet with the positive-parity states being based on 4p-4h configurations. The properties of the positive-parity states are discussed on the basis of the shell model and the parity doublet on the basis of a cluster model with intrinsic reflection asymmetric shapes.Received: 2 May 2003, Revised: 23 September 2003, Published online: 20 January 2004PACS: 21.10.-k Properties of nuclei; nuclear energy levels - 21.60.Gx Cluster models |
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