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:
-
- Danville, CA
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 869279
- Patent Number(s):
- 5308987
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- 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}
}
Works referenced in this record:
A two-dimensional parallel-plate chamber for high-rate soft X-ray detection
journal, July 1986
- Peisert, A.; Sauli, F.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 247, Issue 3
A novel type of parallel plate chamber with resistive germanium anode and a two-dimensional readout
journal, July 1986
- 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