X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1983-03-01
1985-06-04
Smith, Alfred E.
X-ray or gamma ray systems or devices
Source
Electron tube
378 12, 378123, H01J 3530, H01J 3514
Patent
active
045219010
ABSTRACT:
An electron beam production and control assembly especially suitable for use in producing X-rays in a computed tomography X-ray scanning system is disclosed herein. In this system, an electron beam is ultimately directed onto an X-ray producing target in a converging manner using electromagnetic components to accomplish this. The system also includes an arrangement for neutralizing the converging beam in a controlled manner sufficient to cause it to converge to a greater extent than it otherwise would in the absence of controlled neutralization, whereby to provide ion aided focusing.
REFERENCES:
patent: 3344298 (1967-09-01), Martin
patent: 3510713 (1970-05-01), Bennett
Grigsby T. N.
Imatron Associates
Smith Alfred E.
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