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The plasma wave and quasi-static electric field instrument /PWI/ for dynamics Explorer-AIt is explained that the Plasma Wave Instrument (PWI) on Dynamics Explorer-A measures both plasma wave phenomena and quasi-static electric fields. The quasi-static electric fields are measured parallel to the spin axis of the spacecraft in a range of 2 mV/m to 2 V/m and perpendicular to the spin axis 0.5 mV/m to 2 V/m at 16 samples/s. The ac electric field sensors include a 200-m tip-to-tip long wire antenna and a 0.6-m short electric antenna, both of which are perpendicular to the spin axis, and a 9-m tip-to-tip tubular antenna parallel to the spin axis. AC electric wave fields are measured over a frequency range of 1 Hz to 2 MHz and over an amplitude range of 0.03 microvolt/m to 100 mV/m.
Document ID
19820032911
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shawhan, S. D.
(Iowa Univ. Iowa City, IA, United States)
Gurnett, D. A.
(Iowa Univ. Iowa City, IA, United States)
Odem, D. L.
(Iowa, University Iowa City, IA, United States)
Helliwell, R. A.
(Iowa Univ. Iowa City, IA, United States)
Park, C. G.
(Stanford University Stanford, CA, United States)
Date Acquired
August 10, 2013
Publication Date
December 1, 1981
Publication Information
Publication: Space Science Instrumentation
Volume: 5
Subject Category
Spacecraft Instrumentation
Accession Number
82A16446
Funding Number(s)
CONTRACT_GRANT: NAS5-29294
Distribution Limits
Public
Copyright
Other

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