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Title: Ionization chamber

An ionization chamber has separate drift and detection regions electrically isolated from each other by a fine wire grid. A relatively weak electric field can be maintained in the drift region when the grid and another electrode in the chamber are connected to a high voltage source. A much stronger electric field can be provided in the detection region by connecting wire electrodes therein to another high voltage source. The detection region can thus be operated in a proportional mode when a suitable gas is contained in the chamber. High resolution output pulse waveforms are provided across a resistor connected to the detection region anode, after ionizing radiation enters the drift region and ionize the gas.
  1. (Port Jefferson Station, NY)
Publication Date:
OSTI Identifier:
Report Number(s):
US 4264816
DOE Contract Number:
Resource Type:
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY
Country of Publication:
United States
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