Superdeformed nuclear matter in nuclei with : Magnetic properties and neutron shell gap

N. Redon; N. Buforn; R. Duffait; P. Lautesse; M. Meyer; A. Prévost; O. Stézowski; A. Astier; A. Bauchet; I. Deloncle; M. G. Porquet; J. Domscheit; A. Goergen; H. Hübel; E. Mergel; S. Neumann; D. Rossbach; N. Nenoff; G. Schoenwasser; A. N. Wilson; R. Lucas; F. A. Beck; P. Bednardcyk; D. Curien; G. Duchêne; O. Dorvaux; B. J. P. Gall; N. Kintz; J. P. Vivien; D. M. Cullen

doi:10.1140/epja/i2002-10314-3

2022 Impact factor 2.7

Hadrons and Nuclei

Eur. Phys. J. A (2003) 20: 31-32
https://doi.org/10.1140/epja/i2002-10314-3

Superdeformed nuclear matter in nuclei with : Magnetic properties and neutron shell gap

N. Redon¹^*, N. Buforn¹, R. Duffait¹, P. Lautesse¹, M. Meyer¹, A. Prévost¹, O. Stézowski¹, A. Astier¹^,2, A. Bauchet², I. Deloncle², M. G. Porquet², J. Domscheit³, A. Goergen³, H. Hübel³, E. Mergel³, S. Neumann³, D. Rossbach³, N. Nenoff³, G. Schoenwasser³, A. N. Wilson⁴, R. Lucas⁵, F. A. Beck⁶, P. Bednardcyk⁶, D. Curien⁶, G. Duchêne⁶, O. Dorvaux⁶, B. J. P. Gall⁶, N. Kintz⁶, J. P. Vivien⁶ and D. M. Cullen⁷

¹ IPN Lyon, IN2P3-CNRS, Université Lyon-1, F-69622, Villeurbanne Cedex, France
² CSNSM Orsay, IN2P3/CNRS, F-91405, Orsay Campus, France
³ ISKP, Universität Bonn, Nussallee 41-16, D-53115, Bonn, Germany
⁴ Department of Physics, University of York, Y01 5DD, Heslington, York, UK
⁵ CE Saclay, DAPNIA/SPhN, 91191, Gif-sur-Yvette Cedex, France
⁶ IReS Strasbourg, 23 rue du Loess, BP28, F-67037, Strasbourg Cedex 2, France
⁷ Department of Physics and Astronomy, University of Manchester, M13 9PL, Manchester, UK

^* e-mail: nadine@ipnl.in2p3.fr

Abstract

We report the results of an experiment, realized with the EUROBALL IV spectrometer, in which superdeformed (SD) states have been populated in ^197,198Pb nuclei. Crosstalk transitions between two signature partner SD bands in ¹⁹⁷Pb have been observed with an established M1 character, giving access to the magnetic properties of the [752]5/2 intruder orbital. Six new SD bands have been identified in ^197,198Pb. The results are interpreted in the framework of cranked Hartree-Fock calculations. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes.