Computer modeling of image intensifiers and photoelectron guns for time-resolved electron diffraction experiments

Abstract

The first part of the work is devoted to the problem of computer simulation of static image intensifiers and streak image tubes. The most peculiar and sensible points of the simulation, such as image curvature surface, aberration coefficients, spatial and temporal resolution along the work area, are illustrated on typical examples. The problem of image curvature correction is discussed as well. The second part of the work outlines the theoretical grounds and results of computer-aided design of a principally new photoelectron-optical system with time-depending fields capable of essential compressing of electron bunches for the needs of time-resolved electron diffraction (TRED) experiments. Some recent experimental results on the bunch compressing obtained with the newly designed and manufactured photoelectron gun are presented.