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Microgap x-ray detector

Patent ·
OSTI ID:869279
 [1];  [2];  [2]
  1. Danville, CA
  2. Livermore, CA
+ Show Author Affiliations
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.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5308987
OSTI ID:
869279
Country of Publication:
United States
Language:
English

References (2)

A two-dimensional parallel-plate chamber for high-rate soft X-ray detection journal July 1986
A novel type of parallel plate chamber with resistive germanium anode and a two-dimensional readout
  • Bellazzini, R.; Betti, C.; Brez, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 247, Issue 3 https://doi.org/10.1016/0168-9002(86)90406-7
journal July 1986

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