GASDYNAMIC PROCESSES AND HEAT TRANSFER IN THE CHANNELS OF SYSTEMS FOR EJECTION OF ELECTRON BEAMS FROM A VACUUM TO DENSE MEDIA

摘要

The complex problem on the dynamics of a gas flow and the heat transfer between it and the walls of the channels of systems for transport of electron beams has been solved. The diagram of an electron-beam transport system (EBTS) designed for ejection of electrons from a vacuum to a region with a higher pressure, as high as the atmospheric pressure, is shown in Fig. 1. An electron beam that can be generated only in a vacuum passes through the stages with a consequently increasing pressure, connected by channels (diaphragms) with through holes. In each stage, the required rarefaction is provided by the pumping of the gas flowing from the more dense medium to meet the electron beam.