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Title: Buffer for a gamma-insensitive optical sensor with gas and a buffer assembly

A buffer assembly is disclosed 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. 7 figures.
Inventors:
Issue Date:
OSTI Identifier:
7287145
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-103502
Patent Number(s):
US 5311010; A
Application Number:
PPN: US 8-011918
Contract Number:
W-7405-ENG-48
Resource Relation:
Patent File Date: 1 Feb 1993
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; INFRARED RADIATION; RADIATION DETECTION; RADIATION MONITORS; DESIGN; ULTRAVIOLET RADIATION; VISIBLE RADIATION; ALUMINIUM; BERYLLIUM; ALKALINE EARTH METALS; DETECTION; ELECTROMAGNETIC RADIATION; ELEMENTS; MEASURING INSTRUMENTS; METALS; MONITORS; RADIATIONS; 440600* - Optical Instrumentation- (1990-); 440500 - Thermal Instrumentation- (1990-)