X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1986-12-30
1988-05-31
Howell, Janice A.
X-ray or gamma ray systems or devices
Source
Electron tube
378113, 378138, H01J 3514
Patent
active
047486503
ABSTRACT:
In an exemplary embodiment a fine electron beam is generated which impinges on an elemental part of an anode focus region. A beam deflection system is controlled by a control circuit such that the point of impingement of the electron beam on the anode focus region moves along a predetermined path whose configuration effectively determines the desired focus size and shape.
REFERENCES:
patent: 4426722 (1984-01-01), Fujimura
Howell Janice A.
Porta David P.
Siemens Aktiengesellschaft
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