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Emission of negative charged cluster ions in sputtering of LiF, NaF and KBr with cesium ions of kinetic energy ranging from 0.1 keV to 0.3 keV has been investigated. An analysis of the experimental data allows the conclusion about the mechanism of direct cluster ejection from the defect mediated ionic crystals. It has been shown, that molecular ion emission from LiF, KC1 depends slightly on the initial charge and energy of primary multicharged ions. Also, the mass and charge characteristics of desorbed positive particles under electron bombardment of KCI, KBr, LiF, Csl crystals depending on energy of beam and sample temperature have been investigated. It was assumed that multicharged ions desorption from ionic crystals surface is assumed to results in a "Coulomb explosion" mechanism |