[1] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium
[2] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England
[3] CERN, ISOLDE, CH-1211 Geneva 23, Switzerland
[4] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH8 9YL, Midlothian, Scotland
[5] Univ Cologne, IKP, D-50937 Cologne, Germany
[6] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia
[7] IPN Orsay, F-91406 Orsay, France
[8] Univ Paris Sud, CNRS IN2P3, CSNSM, UMR8609, F-91405 Orsay, France
[9] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy
[10] Warsaw Univ, Heavy Ion Lab, PL-02093 Warsaw, Poland
[11] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[12] Tech Univ Munich, D-85748 Garching, Germany
[13] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[14] Univ Munich, D-85748 Garching, Germany
[15] Joint Inst Nucl Res, RU-141980 Dubna, Moscow Region, Russia