Buffer for a gamma-insensitive optical sensor with gas and a buf

Details Buffer for a gamma-insensitive optical sensor with gas and a buf Buffer for a gamma-insensitive optical sensor with gas and a buf

1993-02-01

1994-05-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313538, H01J 4014

Patent

active

053110102

ABSTRACT:
A buffer assembly for a gamma-insensitive gas avalanche focal plane array operating in the ultra-violet/visible/infrared energy wavelengths and using a photocathode and an avalanche gas located in a gap between an anode and the photocathode. The buffer assembly functions to eliminate chemical compatibility between the gas composition and the materials of the photocathode. The buffer assembly in the described embodiment is composed of two sections, a first section constructed of glass honeycomb under vacuum and a second section defining a thin barrier film or membrane constructed, for example, of Al and Be, which is attached to and supported by the honeycomb. The honeycomb section, in turn, is supported by and adjacent to the photocathode.

REFERENCES:
patent: 3961182 (1972-08-01), Spicer

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