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Title: 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 (United States)
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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Related Subjects

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
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