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The charge spectrum of positive ions in a hydrogen auroraAn auroral ion charge spectrometer was flown into a hydrogen aurora on a Javelin sounding rocket launched from Churchill, Manitoba. The instrument contained an electrostatic analyzer which selected particles with incident energy per unit charge up to 20 keV/charge and an 80-kV power supply which accelerated these ions onto an array of solid state detectors. Ions tentatively identified as H(+), He(+2), and O(+) were detected from 225 to 820 km in altitude. The experiment did not discriminate between H(+) and He(+), or between O(+), N(+), and C(+). Upper limits of highly charged heavy ion abundances have been set at 20% of the He(+2) and 0.15% of the H(+). It is concluded that both terrestrial and solar wind sources play significant roles in auroral ion precipitation.
Document ID
19760043542
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lynch, J.
(Wisconsin Univ. Madison, WI, United States)
Pulliam, D.
(Wisconsin Univ. Madison, WI, United States)
Leach, R.
(Wisconsin Univ. Madison, WI, United States)
Scherb, F.
(Wisconsin, University Madison, Wis., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1976
Publication Information
Publication: Journal of Geophysical Research
Volume: 81
Subject Category
Geophysics
Accession Number
76A26508
Funding Number(s)
CONTRACT_GRANT: NGR-50-002-162
Distribution Limits
Public
Copyright
Other

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