Charge cloud diffusion in a sealed position sensitive proportional counter filled with xenon-methane and xenon-carbon dioxide

Journal Article · Tue Feb 01 00:00:00 EST 1983 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1983.4332285· OSTI ID:5766053

Thomas, H D; Turner, M J.L.

The influence of diffusion in a xenon filled imaging proportional counter has been studied in two gas mixtures, xenon-methane and xenon-carbon dioxide. As expected in xenon-methane, by increasing the charge cloud diameter from 280 to 1130 microns, interpolation between the 2mm pitch anode wires is greatly improved. The use of a long diffusion region also delays secondary avalanches and consequently improves the resolution. In xenon-carbon dioxide the charge clouds are smaller, and the improvement in interpolation is less. The resolution in this case is not limited by secondary avalanches and diffusion causes a very small degradation.

• Research Organization: X-Ray Astronomy Group, Physics Department, Leicester University Leicester
• OSTI ID: 5766053
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Vol. 30:1
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MULTIWIRE PROPORTIONAL CHAMBERS
LINEAR MOMENTUM RESOLUTION
AVALANCHE QUENCHING
CARBON DIOXIDE
CLOUD CHAMBERS
DIFFUSION
DIFFUSION LENGTH
IMAGE SCANNERS
METHANE
XENON
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DIMENSIONS
ELEMENTS
FLUIDS
GAS TRACK DETECTORS
GASES
HYDROCARBONS
LENGTH
MEASURING INSTRUMENTS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RARE GASES
RESOLUTION
440104* - Radiation Instrumentation- High Energy Physics Instrumentation