A summary of one year of observations of 6300a airglow at haleakala
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Javelin rocket soundings with far UV scanning spectrometer, noting atomic hydrogen and oxygen radiation
Vibrational populations of Herzberg 1 oxygen system by computer program compared to known spectrograms
Hydroxyl band contamination of emission and background radiation from night sky
Day sky brightness at altitude above 100 km obtained during rocket flight compared to night sky viewed from ground
Optical data supporting satellite observations of soft electron precipitation on poleward side of normal auroral zone
Semiempirical electron impact cross sections and energy loss functions applied to dayglow and auroral intensities calculation, discussing atomic and aeronomic implications
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Tropical UV nightglow measurement by Ogo-4 spectrometer, considering ionospheric recombination excitation mechanism
Nitrogen photoelectron excitation in dayglow, examining 3371 A band intensity, energy spectrum and flux in ionosphere
Photodissociative excitation of atomic oxygen dayglow emission, considering electron impact and dissociative recombination
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An EUV solar blind photomultiplier was rocket-flown to an altitude of 103 km from Kourou, French Guiana. The rocket was spinning, thus allowing observations in all azimuthal directions within 15 deg from the horizontal plane. The observed radiation is strongly dependent on azimuth angle, the maxima of radiation are located in the southwest direction (the directions of maximum are slightly different when the experiment is looking down or up), and the radiation intensity is independent of elevation angle, suggesting that the glow is located between 75 and 105 km in altitude.
The observations with a scanning spectrometer and a single channel photometer, in the wavelength interval between 3100 and 6300 angstroms, are presented for the airborne auroral expedition in November and December 1969. The instrumentation and instrument calibration are described.
The instrumentation, calibration, and data observations of the NASA airborne auroral expedition during November and December 1969 are discussed. The observed data are tabulated along with graphical illustrations of various data correlations.
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A payload consisting of a number of experiments to study the earth's atmosphere was launched from White Sands on Feb. 8, 1971. The differential photoelectron flux spectrum was measured as a function of altitude. The energy distribution revealed the N2 vibrational structure appearing at 2.8 V, rising to a maximum at 4 eV, decreasing to an 8-volt-wide plateau at 20 V, and then further decreasing. The ion and electron density distributions were measured simultaneously. An optical measurement of forbidden O I 5577-A radiation was made. Both electron impact on atomic oxygen and dissociative recombination of O2(+) were found to produce this emission above 150 km. The recombination rate for the O(1 S) found from a reported nightglow profile is 2.5 plus or minus 1.5 x 10 to the minus 9th cu cm/sec. Between 140 and 120 km, photodissociation is a source of 5577 radiation. Chapman three-body recombination is dominant below 120 km.