ROCKET MEASUREMENTS WITH ELECTRON AND ION PROBES IN AN AURORA.
Environmental research paper,
AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
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An Aerobee rocket was fired into Class I Aurora at Churchill, Canada on 8 February 1964. Data are available from the following experiments retarding potential probes mounted on the front and side, standing wave impedance probe on two frequencies, plasma frequency probe, plasma resonance probe, and a Langmuir probe. In addition, simultaneous measurements have been made with ionosondes, all sky cameras, photometers, spectrometers, auroral radar, riometers, and magnetometers. The rocket went through the aurora on ascent and descent at about 105 km. Density values were measured at this altitude about 2.5 x 100,000 per cu cm. This is about a factor of 10 more than that measured at the peak altitude of 228 km. The data are relatively smooth with little of the irregularities expected in an aurora. Author