1. Department of Chemistry and Biochemistry, Queens College and the Graduate Center of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States
2. Jacobs, Inc., Air Force Research Laboratory, Edwards AFB, California 93524, United States
3. In-Space Propulsion Branch, Rocket Propulsion Division, Aerospace Systems Directorate, Air Force Research Laboratory, AFRL/RQRS, Edwards AFB, California 93524, United States