Abstract
Abstract The kinetic energy distributions of oxygen ions desorbed from CO-covered Ni(110) surfaces were obtained at various primary electron energies ranging from 40 to 900 eV. The energy distribution changed depending on the primary electron energy. From differences of the energy distributions for different primary energies, it is found that the energy distribution is composed of several components which are ascribed to different desorption processes. Desorption processes caused by excitation of core electrons are confirmed from the threshold electron energies for desorption.
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