Affiliation: | (1) Institut of Physical Chemistry, University of Mainz, D-6500 Mainz, Federal Republic of Germany;(2) Institut Max von Laue-Paul Langevin, F-38042 Grenoble, France;(3) Department of Chemistry, University of Illinois, 60680 Chicago, IL, USA;(4) EP Division, CERN, CH-1211 Geneva, Switzerland;(5) Present address: DESY-HASYLAB, D-2000 Hamburg 52, Federal Republic of Germany |