1. Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk 630090, Russia, IR FEL Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan, and Budker Institute of Nuclear Physics, Lavrentieva 11, Novosibirsk 630090, Russia