TY - RPRT TI - Evidence that Clouds of keV Hydrogen Ion Clusters Bounce Elastically from a Solid Surface AU - Lewis, R. A. AU - Martin, James J. AU - Chakrabarti, Suman AU - Rodgers, Stephen L. PY - 2002 UR - https://ntrs.nasa.gov/citations/20020092085 ID - 20020092085 ER -