A vibrational analysis of the O2 (A 3Sigma/+/u) Herzberg I system using rocket data

Details A vibrational analysis of the O2 (A 3Sigma/+/u) Herzberg I system using rocket data A vibrational analysis of the O2 (A 3Sigma/+/u) Herzberg I system using rocket data

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1399s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Nov. 1990, p. 1399-1408.

Computer Science

Sound

12

Herzberg Bands, Nightglow, Oxygen Atoms, Rocket Sounding, Vibrational Spectra, Emission Spectra, Molecular Relaxation, Oxygen Spectra, Spectral Methods, Ultraviolet Radiation

Scientific paper

An observation of the UV nightglow between 2670 and 3040 A was conducted over White Sands Missile Range on October 22, 1984. A 1/4-m spectrometer operating at 3.5-A resolution viewed the earth's limb at tangent heights between 90 and 110 km for 120 sec. A total of 41 spectral scans of the nightglow were obtained with the brightest feature being the O2 Herzberg I bands. The data were sorted into two groups, one from the top side of the layer and one containing the emission peak, and compared with synthetic spectra. The deduced vibrational distributions indicate that, at low altitudes, the higher vibrational levels (v-prime greater than 6) were relatively depleted; however, the magnitude of the vibrational shift is much less than that predicted from theories of vibrational relaxation. It is shown that increasing the electronic quenching with respect to the vibrational quenching can reduce the vibrational shift in the model and qualitatively explain the observations; however, several details of the vibrational distribution are not well reproduced.

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