Beam Impingement Angle Effects on Secondary Electron Emission Characteristics of Textured Pyrolytic GraphiteNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1984 - Electron beams - 13 pages |
Common terms and phrases
2000 Primary electron beam energy level beam impingement angle carbon cathode heater curve for soot denote average curve electron beam energy electron beam impingement electron emission characteristics electron emission ratio electron yield characteristics electron yield index emission and reflected function of primary graphite AB surface inelastic collisions investigation ion-textured pyrolytic graphite ion-textured surfaces low secondary electron MDC efficiency molybdenum multistage depressed collector plane of material plasma chamber power supply primary elec primary electron beam Primary electron energy primary electron yield procedure pyrolytic graphite sample pyrolytic graphite surfaces range of primary ratio as function reemitted reflected primary electron residual gas analyzer Scanning electron microscope secondary electron emission soot on smooth sooted control surface sooted surface spires surface current density surface fig symbols denote average Textured Pyrolytic Graphite Thermocouple torr traveling-wave tubes tron energy true secondary electron untreated and ion-textured untreated pyrolytic graphite vacuum chamber