THE APPLICATION OF THE TIME-OF-FLIGHT MASS SPECTROMETER TO THE STUDY OF INORGANIC MATERIALS AT ELEVATED TEMPERATURES*

Summary A Bendix time-of-flight mass spectrometer has been adapted for use in the study of the thermodynamics of chemical reactions at elevated temperatures. The design of the high temperature furnace, which is capable of heating a cell to 2625°K, and its attachment to the spectrometer are discussed in detail. The following chemical reactions have been studied and compared with results from magnetic focusing instruments and by other methods. The stability and sensitivity of the mass spectrometer, the range of linearity of the multiplier, and the determination of appearance potentials are discussed.