Ionization degree for alkali atoms on a rhenium surface

Ion and atom desorption energies for five alkali metals on rhenium were determined using the ion thermal emission noise method. The activation energies for the charge transfer process in the adsorbed state were calculated using a special energetic balance equation, which describes the surface ionization and thermal desorption effects. Energies for desorption of lithium, sodium, potassium, rubidium and cesium from Re surfaces have been determined by measuring the time autocorrelation function of the ion thermoemission current fluctuations.