Roy Christoffersen, Scientist
Lunar Samples
ESCG / Jacobs
roy.christoffersen-1@nasa.gov
Wk: 281-244-8380
Ph.D. Geological Sciences, Brown University, 1982
M.S. Geological Sciences, Brown University, 1978
B.S. Geological Sciences, St. Lawrence University, 1976
Dr. Roy Christoffersen is a FE-STEM Facility Manager for ESCG at the NASA Johnson Space Center. He has more than twelve years of research experience in space and planetary science encompassing early solar system and lunar surface materials and processes. Investigations have included both direct electron microscope characterization and experimental investigation of the solid-state effects of space plasma ions on lunar surface materials and primitive grains in interplanetary dust particles (IDPs).
Dr. Christoffersen has more than nine years experience in NASA technical management within the International Space Station (ISS) Program. Responsibilities included integration and management of microgravity science requirements into ISS capabilities, and principal investigator/payload developer feedback on ISS research integration. Experience includes SAIC Project Management Courses I & II, Introductory and Advanced Concepts of Project Management.
Also, Dr. Christoffersen has more than twenty-seven years experience in application of all aspects of transmission electron microscopy to solid state processes in earth, space and materials science.
Christoffersen, R. Rahman, Z., Keller, L.P. (2012) "Solar ion sputter deposition in the lunar regolith: Experimental simulation user focused-ion beam techniques," 43rd Lunar and Planet. Sci. Conf. electronic abstract #2614.
Christoffersen, R. and Keller, L.P. (2011) "Space radiation processing of sulfides and silicates in primitive solar system materials: comparative insights from in-situ TEM ion irradiation experiments," Meteoritics & Planetary Science 46, 950-969.
Christoffersen, R., Dukes, C., Keller, L.P. and Baragiola, R. (2010) "The effect of space radiation processing on the surface chemistry of lunar regolith grains: Experimental constraints," Meteoritics & Planetary Science Suppl., 73, 5379.
Christoffersen, R., Keller, L.P., Dukes, C., Rahman, Z, and Baragiola, R. "Experimental investigation of space radiation processing in lunar soil ilmenite: Combining perspectives from surface science and transmission electron microscopy," 41st Lunar Planetary Science Conference, abstract #1532, CD-ROM.
Keller, L. P., Loeffler, M. J., Christoffersen, R., Dukes, C., Rahman, Z., Baragiola, R. (2010) "Irradiation of FeS: Implications for the lifecycle of sulfur in the interstellar medium and presolar FeS grains," 41st Lunar Planetary Science Conference, abstract #1172, CD-ROM.
Olivas, J.D., Wright, M.C., Christoffersen, R., Cone, D.M., and McDanels, S. J. (2010) "Crystallographic oxide phase identification of char deposits obtained from space shuttle Columbia window debris," Acta Astronautica, 67, 553-560.