Toward photoionic laser epitaxy: a study of the purity and nucleation conditions of crystalline indium films

An investigation was made of various configurations and operating regimes of systems for ion extraction in a method of selective multistage laser photoionization of atoms. The factor representing separation of a substance per cycle was determined. When several impurities were introduced deliberately, this separation factor was ≥ 10³. The crystallization temperature decreased to 300 K when films were formed by deposition from a beam of In⁺ ions.