1. Staff member in the Nuclear Chemistry Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and is currently a visiting scientist at Max-Planck-Institut für Chemie, D-6500 Mainz, Federal Republic of Germany
2. Professor in the Department of Chemistry, University of California at San Diego, La Jolla 92093, and director of the California Space Institute
3. Director of the Physical Research Laboratory, Navrangpura, Ahmedabad 380009 India, and visiting professor at Scripps Institution of Oceanography, La Jolla, California 92093