Electron gun and a method for using the same

Details Electron gun and a method for using the same Electron gun and a method for using the same

2005-06-07

2005-06-07

Glick, Edward J. (Department: 2882)

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

C313S351000, C313S446000, C313S337000

Reexamination Certificate

active

06903499

ABSTRACT:
An electron gun includes an electron emission cathode, a control electrode, and an extractor and the electron emission cathode is made of rare earth hexaboride. A tip of the electron emission cathode is located between the control electrode and the extractor, and the electron emission surface of the electron emission cathode is spherical or flat.

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