One of the first energetic ion mass spectrometers to sample the ion plasma composition was flown on the ISEE-1 Satellite, one of thee satellites in NASA's International Sun-Earth Explorer (ISEE) progam.
Dr. O.W. Lennartsson Lockheed Missiles & Space Company, Inc. Research and Development Division O/91-20, B/252 3251 Hanover Street Palo Alto, CA 94304 USA /Tel: (415) 424-3259; Fax: (415) 424-3333; SPAN: LOCKHD::LENN