WILLIAM C. FELDMAN, Laboratory Fellow and Co-Team Leader of the Space Plasma team in Space and Atmospheric Sciences (NIS-1) at Los Alamos National Laboratory. Dr. Feldman earned a B.S. in Physics from MIT in 1961 and a Ph.D. in Physics from Stanford University in 1968. He has been a Staff Member at Los Alamos since 1971 and has 26 years experience in the analysis and interpretation of solar wind and magnetospheric plasma data with emphasis on solar wind composition, acceleration, transient disturbances, and kinetic processes. He has 12 years experience in the analysis and interpretation of planetary albedo neutron data. He participated in the design of seven space plasma experiments and was responsible for the design of an energetic electron dosimeter (BDD-2) for the Global Positioning System, the neutron detector for the Mars Observer Gamma-Ray Spectrometer (MOGRS), and is a co-investigator of the space plasma experiments aboard Pioneers 10 and 11, the Interplanetary Monitoring Platforms (IMP) 6, 7, and 8, the International Sun Earth Explorers (ISEE) 1, 2, and 3, Mariner 10, Giotto, Ulysses and the Advanced Composition Explorer (ACE). He was the Principal Investigator of a successful rocket experiment in 1983 (Taurus) that tested a total-absorption neutron spectrometer, of the Army Background Experiment (ABE), a fast neutron spectrometer aboard the Low power Atmosphere Compensation Experiment (LACE) spacecraft launched in 1990, and of a neutron experiment aboard a Long duration Antarctic Mars simulation Balloon (LAMB) launched from McMurdo in December 1992. He is a member of the MOGRS Flight Investigation Team. He is a coinvestigator of Lunar Prospector with primary responsibility for the gamma-ray, neutron, and alpha-particle spectrometers. He served as Associate Editor of the Space Physics section of the Journal of Geophysical Research between 1978 and 1981, as a member of the Committee of Solar and Space Physics of the National Academy of Sciences/National Research Council between 1980 and 1983, as a member of the Committee of Solar-Terrestrial Research of the National Academy of Sciences/National Research Council between 1988 and 1990, and as the Chairman of the NASA Solar Probe Science Study Team between 1988 and the present. He received a Laboratory Distinguished Performance Award in 1985, was named a Laboratory Fellow in 1987, and is author or co-author of more than 200 scientific papers, most of which are concerned with research in Space Physics.