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Title: Microgap x-ray detector

Abstract

An x-ray detector which provides for the conversion of x-ray photons into photoelectrons and subsequent amplification of these photoelectrons through the generation of electron avalanches in a thin gas-filled region subject to a high electric potential. The detector comprises a cathode (photocathode) and an anode separated by the thin, gas-filled region. The cathode may comprise a substrate, such a beryllium, coated with a layer of high atomic number material, such as gold, while the anode can be a single conducting plane of material, such as gold, or a plane of resistive material, such as chromium/silicon monoxide, or multiple areas of conductive or resistive material, mounted on a substrate composed of glass, plastic or ceramic. The charge collected from each electron avalanche by the anode is passed through processing electronics to a point of use, such as an oscilloscope.

Inventors:
 [1];  [2];  [2]
  1. (Danville, CA)
  2. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
869279
Patent Number(s):
5308987
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
microgap; x-ray; detector; provides; conversion; photons; photoelectrons; subsequent; amplification; generation; electron; avalanches; gas-filled; region; subject; electric; potential; comprises; cathode; photocathode; anode; separated; comprise; substrate; beryllium; coated; layer; atomic; material; gold; single; conducting; plane; resistive; chromium; silicon; monoxide; multiple; conductive; mounted; composed; glass; plastic; ceramic; charge; collected; avalanche; passed; processing; electronics; oscilloscope; processing electronics; charge collected; resistive material; silicon monoxide; x-ray detector; electric potential; electron avalanche; detector comprises; gas-filled region; ray detector; substrate composed; x-ray photons; electron avalanches; ray photons; x-ray photon; /250/

Citation Formats

Wuest, Craig R., Bionta, Richard M., and Ables, Elden. Microgap x-ray detector. United States: N. p., 1994. Web.
Wuest, Craig R., Bionta, Richard M., & Ables, Elden. Microgap x-ray detector. United States.
Wuest, Craig R., Bionta, Richard M., and Ables, Elden. Sat . "Microgap x-ray detector". United States. https://www.osti.gov/servlets/purl/869279.
@article{osti_869279,
title = {Microgap x-ray detector},
author = {Wuest, Craig R. and Bionta, Richard M. and Ables, Elden},
abstractNote = {An x-ray detector which provides for the conversion of x-ray photons into photoelectrons and subsequent amplification of these photoelectrons through the generation of electron avalanches in a thin gas-filled region subject to a high electric potential. The detector comprises a cathode (photocathode) and an anode separated by the thin, gas-filled region. The cathode may comprise a substrate, such a beryllium, coated with a layer of high atomic number material, such as gold, while the anode can be a single conducting plane of material, such as gold, or a plane of resistive material, such as chromium/silicon monoxide, or multiple areas of conductive or resistive material, mounted on a substrate composed of glass, plastic or ceramic. The charge collected from each electron avalanche by the anode is passed through processing electronics to a point of use, such as an oscilloscope.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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