Reevaluation of a Feasibility Study to Measure the Vibrational Temperature of Nitrogen in the Upper Atmosphere by Chemical Release of Hydrogen Iodide.
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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A reevaluation has been made of a proposed hydrogen iodide HI chemical release experiment to measure the vibrational temperature of nitrogen TvN2 in the upper atmosphere. Recently reported laboratory measurements of important production and loss mechanisms for N2H in the upper atmosphere are considered. A consideration of recently measured temporal and spatial fluctuations in the infrared hydroxyl airglow brought about a revision of the estimate of the minimum measurable TvN2 to 1200K. An analysis is also given to the limitations of the experiment by the necessity to consider evaporation from a release of liquid HI. It is concluded that the probability of obtaining meaningful results from the proposed experiment is not high enough to warrant its continuance. Modified author abstract
- Atmospheric Physics
- Atomic and Molecular Physics and Spectroscopy