State-selective electron capture into He-like U 90¿ ions in collisions with gaseous targets

X. Ma, Th. Stohlker, F. Bosch, O. Brinzanescu, S. Fritzsche, C. Kozhuharov, T. Ludziejewski, P. H. Mokler, Z. Stachura, and A. Warczak Gesellschaft fur Schwerionenforschung, 64291 Darmstadt, Germany Institute of Modern Physics, 730000 Lanzhou, China Institut fur Kernphysik, University of Frankfurt, 60486 Frankfurt, Germany National Institute for Laser Plasma and Radiation Physics, 76900 Bucharest-Magurele, Romania Universitat Kassel, 34132 Kassel, Germany Institute for Nuclear Studies, 05-400 Świerk, Poland Institute of Nuclear Physics, 31-342 Cracow, Poland Institute of Physics, Jagiellonian University, 30-059 Cracow, Poland Received 20 October 2000; published 31 May 2001