BASIC ELECTRON BEAM WELD SYSTEM JAMES C. JONES 6-28-76 CATHODE (ELECTRON EMITTING HEATED FILAMENT) HAND-HELD ELECTRON-BEAM GUN ENVELOPE (REF. VOLUME) ELECTRON BEAM WORKPIECE DC SUPPLY TO FILAMENT HIGH-VOLTAGE DC POWER SUPPLY ANODE POSITIONING DIAPHRAGM ELECTROMAGNETIC FOCUSING LENS
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