EPJ

2022 Impact factor 2.7
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 1, 359-364

Conversion-electron gamma-ray coincidence spectroscopy of superdeformed 135Nd

B. Aengenvoort1 - W. Korten1,a - H. Hübel1 - S. Chmel1 - A. Görgen1 - U.J. van Severen1 - W. Pohler1 - R. Zinken1 - T. Härtlein2 - C. Ender2 - F. Köck2 - P. Reiter2 - D. Schwalm2 - F. Schindler3 - J. Gerl4 - R. Schubart4 - F. Azaiez5 - S. Bouneau5 - J. Duprat5 - I. Deloncle6

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 Communicated by B. Herskind

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 $90 \le A \le 149$

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