X-ray intensifier tube comprising a separating layer between the

Details X-ray intensifier tube comprising a separating layer between the X-ray intensifier tube comprising a separating layer between the

1987-10-16

1989-05-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2504871, 313527, H01J 3150, G01J 158

Patent

active

048312495

ABSTRACT:
The separating layer between the luminescent layer and the photocathode of the entrance screen in an X-ray image intensifier tube is formed by a layer which has a suitable optical transmission, a suitable chemical inertia, a suitable tightness and a strongly bridging character and which is deposited by means of a plasma CVD technique, so that all requirements to be imposed on a separating layer can be satisfied without causing a substantial loss of efficiency. By variation of the material composition, measured across the thickness of the layer, an optimum optical transition can be realized between the luminescent layer and the photocathode.

REFERENCES:
patent: 3716714 (1973-02-01), Niewold et al.
patent: 3838273 (1974-09-01), Cusano
patent: 4311907 (1982-01-01), Takami et al.
patent: 4475032 (1984-10-01), Popma et al.
patent: 4691077 (1987-09-01), Gregory et al.
patent: 4712011 (1987-12-01), Van Leunen
patent: 4717631 (1988-01-01), Kaganowicz et al.

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