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NASA/Max Planck Institute Barium Ion Cloud Project.NASA and the Max Planck Institute for Extraterrestrial Physics (MPE), Munich, Germany, conducted a cooperative experiment involving the release and study of a barium cloud at 31,500 km altitude near the equatorial plane. The release was made near local magnetic midnight on Sept. 21, 1971. The MPE-built spacecraft contained a canister of 16 kg of Ba CuO mixture, a two-axis magnetometer, and other payload instrumentation. The objectives of the experiment were to investigate the interaction of the ionized barium cloud with the ambient medium and to deduce the properties of electric fields in the proximity of the release. An overview of the project is given to briefly summarize the organization, responsibilities, objectives, instrumentation, and operational aspects of the project.
Document ID
Document Type
Reprint (Version printed in journal)
Brence, W. A.
Carr, R. E.
Gerlach, J. C.
(NASA Wallops Station Wallops Island, Va., United States)
Neuss, H.
(Max-Planck-Institut fuer Physik und Astrophysik Munich, Germany)
Date Acquired
August 7, 2013
Publication Date
September 1, 1973
Publication Information
Publication: Journal of Geophysical Research
Volume: 78
Subject Category
Instrumentation And Photography
Accession Number
Distribution Limits

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