Kinetics of Electron Impact Desorption of Ions and Neutrals from Polycrystalline Tungsten

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Abstract
A cylindrical magnetic spectrometer has been constructed to study electron impact desorption of ions and neutrals from solid surfaces. The apparatus has been applied to the study of polycrystallinetungsten with O 2 , CO, CO 2 , N 2 , H 2 , and H 2 O adsorbed. This paper reports the results of the measurements of the kinetics of the adsorption and desorption processes, the states of adsorption which are observed, the total desorption cross sections for these states, and electronic and thermal conversion between states.

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