Abstract
Aluminum samples were heated in air in the bulk temperature range of 350–520°C using two different methods; infrared oven and solar flux heating. The oxidized samples were inserted in a UHV chamber and elemental composition of the surface was performed using Auger Electron Spectroscopy (AES). The oxide films also were depth profiled using inert gas ion beam sputtering. The results of such analyses for infrared oven heated and solar high and low flux exposed samples were compared. Such results indicate that, at equivalent bulk temperatures, the solar flux heated samples have significantly higher surface temperatures than those of the oven heated samples. Also, Photon Stimulated Desorption (PSD) of CO 2 from the top surface region of the solar exposed samples was observed, thus changing the surface composition of the oxide and the temperature differential in the sample.
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