Cathode cup improvement

Details Cathode cup improvement Cathode cup improvement

1987-03-19

1989-09-19

Howell, Janice A.

X-ray or gamma ray systems or devices

Source

Electron tube

378121, 378136, H01J 3506

Patent

active

048688428

ABSTRACT:
A cathode electrode improvement is disclosed which utilizes a front focus slot having a diverging cross-sectional area to focus an electron beam within an x-ray tube to provide a high emission, small area focal spot.

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patent: 4573186 (1986-02-01), Reinhold
patent: 4730353 (1988-03-01), Ono et al.
Nema Standard XR, 5-1984, Measurement of Dimensions and Properties of Focal Spots of Diagnostic X-Ray Tubes.
Electron Flow in the Conventional X-Ray Tube, J. Rodney M. Vaughan-IEEE Transactions on Electronc Devices, vol. Ed. 32, No. 3, Mar. 1985, pp. 654-657.

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