Computer Science – Sound
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35.1367c&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 35, Nov. 1987, p. 1367-1372.
Computer Science
Sound
9
Airglow, Mesosphere, Sounding Rockets, Spacecraft Glow, Contamination, Molecules, Oxygen, Photometers, Shock Waves
Scientific paper
In a recent rocket-borne photometer experiment strong contaminating signals were observed at 5577 and 7619 A. The contamination was observed in the ram direction on both upleg and downleg trajectories and no contamination was observed in the wake direction. A strongly spin-modulated signal was observed at heights up to 88 km on the upleg and at heights below 78 km, where the rocket inverted, on the downleg. The signals at both wavelengths were observed to decrease exponentially with increasing height, but with different e-folding intervals, the latter being 1.23 km for the O I 5577 A emission and 2.65 km for the O2 7619 A. At a height of 81.5 km the intensities were the same and were equal to 220 Rayleighs per Angstrom. It is suggested that the contamination glow most probably has its origin in reactions involving atomic species produced by thermal dissociation in the shock wave in front of the photometers.
Clemesha Barclay R.
Sahai Yogeshwar
Takahashi Hiroyuki
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