CHARACTERISTICS OF AN IMPROVED AXIAL EMISSION GAUGE

The electron trajectories in the axial emission gauge (AE gauge) were studied using the electronic computer, and the distribution of the ele ctric field in the gauge is improved. The lengths of the electron traj ectories passing through the effective space for ionization are elonga ted, and a large part of the electrons are collected at last by the ne wly considered 'electron collector'. The X-ray generated on this elect ron collector is effectively screened by a small shielding cylinder su rrounding the ion collector. In the preliminary experiment, it was con firmed that more than 70% of the electrons were collected by the elect ron collector, and the sensitivity S of this gauge was higher than 1 P a-1.