Electron gun provided with a device producing a magnetic field i

Details Electron gun provided with a device producing a magnetic field i Electron gun provided with a device producing a magnetic field i

1990-01-12

1992-04-28

DeMeo, Palmer C.

Electric lamp and discharge devices

With magnetic device

313155, 313443, H01J 150, H01J 302, H01J 312

Patent

active

051091798

ABSTRACT:
This disclosure concerns electron guns comprising several electrodes, including a cathode. The gun has a device producing a magnetic field, adjustable if necessary, in the vicinity of the cathode. This device works together with one of the electrodes other than the cathode. It cooperates notably with the anode or the wehnelt. This device is either a solenoid or one or more permanent magnets. This device is placed either inside or outside the gun. It can be applied to high-power, "O" type electron tubes.

REFERENCES:
patent: 2149101 (1939-02-01), Ploke
patent: 2347990 (1944-05-01), Coeterier
patent: 2785330 (1957-03-01), Fogelberg et al.
patent: 2934666 (1960-04-01), Shrader
patent: 3052808 (1962-09-01), Klein
patent: 3092745 (1963-06-01), Veith et al.
patent: 3141988 (1964-07-01), Murphy
patent: 3225248 (1965-12-01), Scheffels
patent: 3522469 (1970-08-01), Miram
patent: 3832596 (1974-08-01), Nelson

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