The rotational continuum for normally deformed nuclei of the rare earth region is investigated making use of statistical analysis methods, With these techniques it is possible to extract information on the rotational motion from the region of high level density, in this connection, two points will be discussed: i) the important role of the residual interaction in the description of the experimental data and ii) the dependence of the mixing among rotational bands on the symmetry quantum numbers of the nuclear states, This last point was investigated for the nucleus Er-163 for which it has been found that the gamma-cascades feeding into low-K bands are different from those feeding high-K bands, This result indicates that the K-selection rules are effective for excited rotational bands within the angular momentum 30h less than or equal to I less than or equal to 40h.

Study of band mixing in the rotational quasi-continuum / A. Bracco, P. Bosetti, S. Leoni, S. Frattini, E. Vigezzi, T. Dossing, B. Herskind, M. Matsuo. - In: PROGRESS IN PARTICLE AND NUCLEAR PHYSICS. - ISSN 0146-6410. - 38(1997), pp. 185-194. ((Intervento presentato al convegno International School of Nuclear Physics - 4pi High Resolution Gamma Ray Spectroscopy and Nuclear Structure tenutosi a Erice nel 1996 [10.1016/s0146-6410(97)00026-4].

Study of band mixing in the rotational quasi-continuum

A. Bracco;S. Leoni;
1997

Abstract

The rotational continuum for normally deformed nuclei of the rare earth region is investigated making use of statistical analysis methods, With these techniques it is possible to extract information on the rotational motion from the region of high level density, in this connection, two points will be discussed: i) the important role of the residual interaction in the description of the experimental data and ii) the dependence of the mixing among rotational bands on the symmetry quantum numbers of the nuclear states, This last point was investigated for the nucleus Er-163 for which it has been found that the gamma-cascades feeding into low-K bands are different from those feeding high-K bands, This result indicates that the K-selection rules are effective for excited rotational bands within the angular momentum 30h less than or equal to I less than or equal to 40h.
nuclei; chaos; decay
Settore FIS/04 - Fisica Nucleare e Subnucleare
1997
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/798298
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