Influence of the Geometric Dimensions of a Nanosystem on the Main Characteristics of Charge Exchange with a Negative Ion

Abstract

The problem of charge exchange between a negative hydrogen ion and nanosystems (thin metal films and island films) is considered. Quantum-mechanical calculations show that the effectiveness of charge exchange is determined by the ion-surface distance and the structure of discrete electron energy levels inside the film. In turn, the structure of the discrete levels depends on the film’s geometric dimensions. The characteristics of charge exchange (the effectiveness of the electron transfer, the probability of charge exchange, the propagation velocity, and the average coordinate of the electron’s position inside the film) are calculated via solution of the nonstationary Schrödinger equation. It is shown that these quantities can also be approximated by a simple linear model of electron propagation.