ELECTRON CANNON AND METHOD FOR MANUFACTURING AN ELECTRON CANNON.

摘要

The invention relates to an electron gun comprising a cathode-unit composed of a cathode shaft 53 which is surrounded by a heat reflection screen 56. A connection piece 55 is secured to the head end of the cathode shaft 53. A holder 59 containing electron-emitting material 60 is located on the connection piece 55. The cathode shaft 53 is suspended in the heat reflection screen 56 by means of suspension wires 57, each wire being secured to the heat reflection screen with one end which is at least clsoe to the head end of the heat reflection screen 56; and the other end 58 being located between the connection piece 55 and the holder 59.