真空中の光電子電流-電圧特性の飽和現象

抄録

A Monte-Carlo simulation for the photoelectron current behaviour is carried out to understand the measured anode current between parallel plane electrodes in vacuum which requires more than +20V before it saturates. In order to reproduce such a gradual staturation characteristics, elastic and inelastic reflection of electrons at the surface of electrodes have to be introduced with appropriate incident energy and angle dependences.
The result of the simulation shows that the electron reflection at the electrode is essential to obtain realistic current-voltage characteristics in vacuum, where the most of electrons have to be reflected several times before entering the anode.