Accession Number : ADD006739

Title :   Focusing Anode for Cold-Cathode Electron Gun.

Descriptive Note : Patent Application,


Personal Author(s) : Whitney,Wayne T

Report Date : 09 Nov 1979

Pagination or Media Count : 8

Abstract : This document discloses a focusing anode for a cold-cathode electron gun for exciting gas-filled lasers. In E-beam excitation of gas lasers the E-beam passes an electron-collecting aperture. The E-beam normally diverges so that all of the electrons do not pass through the aperture. By shaping the electrostatic field near the electron collecting aperture, the electrons are guided through the aperture. With a transparent grid-type anode having the shape of a section of a semi-cylinder, it has been determined that the number of electrons entering the laser cell is approximately four times higher than with a flat grid anode as presently used in the prior art. (Author)

Descriptors :   *Patent applications, *Cold cathode tubes, *Electron guns, *Gas lasers, Focusing, Anodes(Electron tubes)

Subject Categories : Electrical and Electronic Equipment
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE