High-perveance electron guns with vacuum-tight cermet bodies

This paper describes two high-perveance electron guns with longitudinal compression: EP-5/3.5 (MKG) and EP-10/5 (MKG), which are intended to be placed outside the vacuum chamber and which are small in size and mass. The guns with vacuum-tight bodies have the same current, perveance, current transmission coefficient, and dependence of beam power on potential as did the initial forms of the same guns without vacuum-tight bodies. The maximum beam power and the maximum working pressure are reduced in the sealed-body guns.