Abstract
The mechanism of microcrater formation under the action of an intense electron beam is theoretically studied for the clean surface of a flat solid target with small perturbations in the form of protrusions or cavities. It is shown that the formation of microcraters is related to the development of instabilities of the Rayleigh-Taylor and Richtmyer-Meshkov types and has a threshold character with respect to the energy deposited in the target. The laws of microcrater formation in the regimes of irradiation corresponding to typical experimental conditions are considered.
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