Ionization chamber

Patent · Wed Dec 31 23:00:00 EST 1980

OSTI ID:863872

Walenta, Albert H ^[1]

---

1. Port Jefferson Station, NY

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.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY
• DOE Contract Number: EY-76-C-02-0016
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4264816
• OSTI ID: 863872
• Country of Publication: United States
• Language: English

Related Subjects

/250/313/
anode
chamber
connected
connecting
contained
detection
drift
electric
electric field
electrically
electrically isolate
electrically isolated
electrode
electrodes
enters
field
fine
fine wire
gas
grid
ionization
ionization chamber
ionize
ionizing
ionizing radiation
isolated
maintained
mode
operated
output
output pulse
proportional
provided
pulse
pulse waveform
pulse waveforms
radiation
region
regions
relatively
relatively weak
resistor
resolution
separate
source
stronger
suitable
suitable gas
therein
voltage
voltage source
waveforms
weak
wire
wire grid