Investigation of Atomic Oxygen-Surface Interactions Related to Measurements with Dual Air Density Explorer Satellites

摘要

For a number of candidate materials of construction for the dual air density explorer satellites the rate of oxygen atom loss by adsorption, surface reaction, and recombination was determined as a function of surface and temperature. Plain aluminum and anodized aluminum surfaces exhibit a collisional atom loss probability alpha ch76.01 in the temperature range 140 - 360 K, and an initial sticking probability. For SiO coated aluminum in the same temperature range, alpha ch76.001 and So ch76.001. Atom-loss on gold is relatively rapid alpha ch110.01. The So for gold varies between 0.25 and unity in the temperature range 360 - 140 K. (Author)