High-Resolution Absorption Spectroscopy of NO2
AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
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The absorption cross section of NO2 has been measured above the 3979 predissociation limit in the region of 3920 and 3950, as well as in the discretely structured areas, around 4112 adn 4140. Spectra were taken in a dual- beam arrangement by means of a tunable, pulsed dye laser having a 0.05 bandwidth FWHM. This represents an improvement of at least a factor of three over the resolution employed in previous studies. Below 3979 the spectra are continuous, with occasional diffuse rotational lines superimposed. The spectra taken above 4100 reveal a wealth of structural complexity. We report here absolute cross sections taken at 300K. The work above 4100 was also performed at 250K. Only slight variations in the measured cross sections are observed between these two temperatures.
- Inorganic Chemistry