X-ray tube cathode with reduced unintended electrical field...

Details X-ray tube cathode with reduced unintended electrical field... X-ray tube cathode with reduced unintended electrical field...

2008-06-03

2008-06-03

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S137000, C378S138000

Reexamination Certificate

active

07382862

ABSTRACT:
An x-ray source has an evacuated tube. An anode is disposed in the tube and includes a material configured to produce x-rays in response to impact of electrons. A cathode is disposed in the tube opposing the anode configured to produce electrons accelerated towards the anode in response to an electric field between the anode and the cathode. A flange extends from the cathode toward the anode, and has a smaller diameter than the evacuated tube. The flange extends closer to the anode than an interface between the cathode and the tube thus forming a reduced-field region between the evacuated tube and the flange.

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