Charge Cloud Diffusion in a Sealed Position Sensitive Proportional Counter Filled with Xenon-Methane and Xenon-Carbon Dioxide

@article{Thomas1983ChargeCD,
  title={Charge Cloud Diffusion in a Sealed Position Sensitive Proportional Counter Filled with Xenon-Methane and Xenon-Carbon Dioxide},
  author={Harrison D. Thomas and Martin J. L. Turner},
  journal={IEEE Transactions on Nuclear Science},
  year={1983},
  volume={30},
  pages={347-349}
}
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… CONTINUE READING

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