1. Space Environment Department, Soreq NRC, Yavne 81800, Israel, Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States, Department of Chemistry, University of Victoria, Victoria, British Columbia, V8W 3V6, Canada, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States, and Schulich Faculty of Chemistry, Technion, Haifa 32000, Israel