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Atmospheres of Earth and the Planets
This book contains the lectures presented at the Summer Advanced Study Institute, 'Physics and Chemistry of Atmospheres' which was held at the University of Liege, Belgium, during the period July 29-August 9, 1974. One-hundred nineteen persons from eleven different countries attended the Institute. The authors and publisher have made a special effort for rapid publication of an up to-date status of the physics and chemistry ofthe atmospheres of Earth and the plan ets, which is an ever-changing area. Special thanks are due to the lecturers for their diligent preparation and excellent presentations. The individual lectures and the published papers were deliberately limited; the authors' cooper...
Laboratory Study of the Thermochemical Properties of Materials Used in Spacecraft
A high temperature mass spectrometer used to obtain laboratory data on the thermochemical properties of materials encountered in space research is described in detail. The experimental procedures and data analysis necessary to obtain thermochemical constants from the mass spectrometer data are also described. The present experimental arrangement allows cell temperatures of up to 2100 K. Reliable measurements at signal levels below 10 ion counts/s can be made because of the very low background signal and the entirely automated data acquisition and averaging system. In preliminary studies of osmium and its oxides, it is shown that the choice of molybdenum as the cell material is detrimental. The use of an alumina Knudsen cell is proposed.
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