1. Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, 3 Institutskaya Street, 630090 Novosibirsk, Russia, Novosibirsk State University, 2 Pirogova Street, 630090 Novosibirsk, Russia, and the Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, 85 Umultowska, Poznan 61-614, Poland