X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1998-07-10
2000-03-28
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Electron tube
378143, H01J 3514
Patent
active
060441305
ABSTRACT:
A transmission type X-ray tube is provided with a ceramic stem fitted with cathode pins; an output window, the lower surface of which is deposited with a target metal; a ceramic bulb provided between the ceramic stem and the output window; and a focusing electrode provided along the inner surface of the ceramic bulb and which lower end is interposed between the upper surface of the ceramic stem portion and the lower end of the ceramic bulb. With this configuration, not only can the size of the X-ray tube be reduced, but mounting of the focusing electrode can also be made easier, thereby simplifying assembly operations.
REFERENCES:
patent: 4669173 (1987-06-01), Valkonet
Inazura Tsutomu
Suzuki Kenji
Church Craig E.
Hamamatsu Photonics K.K.
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