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The European Physical Journal A
ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)
Abstract Volume 1 Issue 4 (1998) pp 359-364
nuclear structure: Conversion--electron gamma--ray coincidence spectroscopy of superdeformed 135Nd
B. Aengenvoort (1), W. Korten (1) (a), H. Hübel (1), S. Chmel (1), A. Görgen (1), U.J. van Severen (1), W. Pohler (1), R. Zinken (1), T. Härtlein (2), C. Ender (2), F. Köck (2), P. Reiter (2), D. Schwalm (2), F. Schindler (3), J. Gerl (4), R. Schubart (4), F. Azaiez (5), S. Bouneau (5), J. Duprat (5), I. Deloncle (6)
(1) Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, D-53115 Bonn, Germany
(2) Max-Planck Institut für Kernphysik, Saupfercheckweg 1, D-69029 Heidelberg, Germany
(3) Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany
(4) Gesellschaft für Schwerionenforschung, Planckstr. 1, D-64291 Darmstadt, Germany
(5) Institut de Physique Nucléaire, IN2P3/CNRS, F-91406 Orsay Campus, France
(6) CSNSM, IN2P3/CNRS, F-91405 Orsay Campus, France
Received: 22 December 1997 / Revised version: 19 January 1998
Abstract: Three mini-orange conversion-electron spectrometers and four Euroball Ge Cluster detectors have been used for <Gamma>-e- coincidence spectroscopy of superdeformed 135Nd. Transitions within the superdeformed band are shown to have the expected E2 multipolarity. The 766.5-keV transition which links the band to a positive-parity state has a conversion coefficient consistent with M1 multipolarity. Consequently, positive parity is deduced for the superdeformed band. No evidence for E0 transitions was found.
PACS: 21.10.Hw Spin, parity and isobaric spin - 23.20.Nx Internal conversion and extranuclear effects - 23.20.Js Multipole matrix elements - 27.60.+j 90 \leq A \leq 149
(a) Present address: DAPNIA/SPhN, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France
Communicated by B. Herskind
Online publication: April 21, 1998
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