Craig J Hardgrove¹, Richard D Starr², Thomas H Prettyman³, Igor Lazbin⁴, Anthony Colaprete⁵, Alessandra Babuscia⁶, Erik Johnson⁷, James F. Christian⁸, Lena Heffern¹ and James F Bell III¹, (1)Arizona State University, Tempe, AZ, United States, (2)Catholic University of America, Washington, DC, United States, (3)Planetary Science Institute Albuquerque, Albuquerque, NM, United States, (4)AZ Space Technologies, Tempe, United States, (5)NASA, Moffett Field, CA, United States, (6)Jet Propulsion Laboratory, Pasadena, CA, United States, (7)Radiation Monitoring Devices Inc., Auburn, MA, United States, (8)Radiation Monitoring Devices, Inc., Watertown, MA, United States