About the properties of cylindrical mirrors for the accounting of electrons with the azimuthal component of velocity. The distribution of electrons near the output aperture

By numerical simulation the distribution of electrons on the surface of the cylinder containing the output aperture for schemes axele-ring and the ring-ring of the cylindrical mirror are investigated. The distributions for different values of the starting radius, the radius of the cylinder and the width of the emission ring are obtained. It is shown that for a fixed width emission rings and increasing its radius among two competing processes (increase the current on detector by increasing the area of emissions and current decreasing due to the greater proportion of electrons with an azimuthal velocity component) dominates the first. It is shown that the peaks of the electron distribution on the surface of the cylinder are increased significantly with increasing radius of the emission ring, becoming asymmetrical with increasing of the peak tails.