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The first numerical simulation of the process of ionization of an atomadsorbed on a metal surface by the subfemtosecond pulse is presented. Thestreaking scheme is considered, when a weak sub-femtosecond pulse comestogether with a strong IR pulse with a variable delay between them. The problemis analyzed with numerical solving the non-stationary Schroedinger equation inthe cylindrical coordinate. The results obtained are compared with ones in thegas phase. We show that the surface influences the DDCS, but the observation ofthis influence, beside the trivial polarization shift of the energy of theinitial state, requires a quite high experimental resolution.

Theoretical study of ionization of an alkali atom adsorbed on a metal surface by laser assisted subfemtosecond pulse