THE PROPOSED RESEARCH FORMS A COLLABORATIVE TEAM UNDER THE DIRECTION OF PI THOMPSON AT PURDUE UNIVERSITY. PI THOMPSON IS RESPONSIBLE FOR OVERALL DIRECTION AND MANAGEMENT OF THE PROPOSED WORK. CO-IS AT NASA JSC INCLUDE KELLER AND CHRISTOFFERSEN TO ASSIST WITH CHEMICAL AND MICROSTRUCTURAL ANALYSES OF THE SAMPLES CLEMETT FOR ORGANIC ANALYSES DUKES AT LASP-UVA RESPONSIBLE FOR THE LABORATORY ION IRRADIATIONS AND LOEFFLER AT NAU RESPONSIBLE FOR THE LABORATORY LASER IRRADIATIONS. COLLABORATORS CLOUTIS MORRIS AND GRAFF WILL PERFORM OPTICAL REFLECTANCE SPECTROSCOPY OF SELECTED SAMPLES. COLLABORATOR ZEGA WILL ASSIST WITH SPECIALIZED TEM MEASUREMENTS ON AN AS-NEEDED BASIS.