Rise in the efficiency of ionization of atoms by pulse-periodic lasers

The possibility is investigated of raising the efficiency of particle interception in the method of resonant photoionization of atoms by laser radiation in a closed hot cavity, located in vacuum, and subsequently employing an electric field to extract the ions formed through a small aperture in the wall. It is shown that for realistic laser radiation parameters (pulse duration ~15 nsec, repetition frequency 10 kHz), the cavity geometry can be chosen in such a way that the interception efficiency exceeds 50%. The possibility is demonstrated of completely extracting the ions formed by photoionization from the cavity.