| 摘要 |
welding equipment. SUBSTANCE: electron-beam gun has anode 2, cathode 3, trap 4, focusing lens 5, deflecting yoke 6, gate electrode 7, and case 8 all arranged along its optical axis 1. Trap 4 mounted in anode 2 and made in the form of bush of getter material absorbing active gases and ions heats up during gun operation. EFFECT: simplified design and enhanced reliability of gun. 4 cl, 1 dwg
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