Electron gun

Details Electron gun Electron gun

2007-03-13

2007-03-13

Berman, Jack I. (Department: 2881)

Radiant energy

Irradiation of objects or material

Irradiation of semiconductor devices

C250S42300F, C250S398000, C313S038000

Reexamination Certificate

active

10822720

ABSTRACT:
An electron gun includes a cathode portion which emits electrons, an anode portion which accelerates the emission electrons, a bias portion which is arranged between the cathode portion and the anode portion and controls trajectories of the emission electrons, a shielding portion which is arranged below the anode portion and shields some of the emission electrons, and a cooling portion which cools the shielding portion. The bias portion controls the trajectories of the electrons so as to form a crossover between the bias portion and the anode portion, and prevents the electrons from emitting on the anode portion.

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“soldering”, Encyclopaedia Brittanica. Retrieved Jul. 12, 2005 from Encyclopaedia Brittanica Online. <http://www.search.eb.com/eb/article?tocld=9068572>.

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