Accession Number : AD0742841

Title :   Investigation of Pulsed Cold Cathode Electron Guns for Use as a Laser Discharge Sustainer.

Descriptive Note : Final rept. Apr-Oct 71,

Corporate Author : PHYSICS INTERNATIONAL CO SAN LEANDRO CALIF

Personal Author(s) : Loda,Gary ; Dehart,Terrance

Report Date : MAY 1972

Pagination or Media Count : 78

Abstract : A study has been undertaken to construct and investigate cold cathode electron guns in the range of 1 to 10 A/sq.cm. for eventual use as laser discharge sustainers. Measurements have been made on impedance characteristics, pulse durations, and beam uniformity. Emission mechanisms have been proposed and a relation between impedance and space charge limited flow has been established. Limitations in pulse duration have been defined. Uniformity results from photographs of beam-produced bremsstrahlung are presented. Application of such a device as a discharge sustainer is discussed. (Author)

Descriptors :   (*COLD CATHODE TUBES, *ELECTRON GUNS), (*LASERS, DISCHARGE TUBES), DIODES(ELECTRON TUBES), ELECTRICAL IMPEDANCE, ELECTRON BEAMS, GAS DISCHARGES, THERMIONIC EMISSION, PHOTOELECTRIC EFFECT

Subject Categories : Electrical and Electronic Equipment
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE