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CIV experiments on ATLAS-1A test of the Critical Ionization Velocity (CIV) theory was made with neutral xenon releases from the Space Experiments with Particle Accelerators hollow cathode plasma contactor onboard the Shuttle Orbiter Atlantis during the ATLAS-1 mission. The gas velocity perpendicular to the Earth's magnetic field was essentially the orbital velocity (7.5 km/s), and thus it exceeded the CIV for xenon. The releases were observed with onboard instrumentation. A factor of 60 enhancement was seen in the Langmuir probe current. Calculations confirmed that release conditions generally satisfied criteria for CIV and predicted a maximum factor of 20 increase in plasma density. Thus, CIV effects were likely to have occurred during the ATLAS-I experiments.
Document ID
19930047921
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Marshall, J. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Burch, J. L.
(Southwest Research Inst. San Antonio, TX, United States)
Choueiri, E. Y.
(Princeton Univ. NJ, United States)
Kawashima, N.
(Inst. of Space and Astronautical Science Sagamihara, Japan)
Date Acquired
August 16, 2013
Publication Date
March 19, 1993
Publication Information
Publication: Geophysical Research Letters
Volume: 20
Issue: 6
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
93A31918
Funding Number(s)
CONTRACT_GRANT: NAS8-32488
CONTRACT_GRANT: AF-AFOSR-91-0162
Distribution Limits
Public
Copyright
Other

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