Update of Ionisation Cross Sections for Xenon

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Şahin Ö., Kalkan Y., Tapan İ., Özmutlu E. N. , Veenhof R.

BALKAN PHYSICS LETTERS, vol.20, pp.159-164, 2012 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 20
  • Publication Date: 2012
  • Page Numbers: pp.159-164
  • Bursa Uludag University Affiliated: Yes


The number of produced electron-ion pairs by a free electron per unit length in a

detector volume, known as Townsend coefficients can be calculated at certain electric field

strengths by using ionisation cross sections of gases. Possible errors on cross sections may lead big

uncertainties on Townsend coefficients, thus affecting gas gain which is an essential characteristic

property of detectors, considerably. In this work we have investigated Xenon ionisation cross

sections in order to update Magboltz program commonly used in gas detector simulations. We have

seen from pioneer calculations for Xenon-Methane gas mixture that results of such an update will

be crucial on the simulation studies for Xenon-based gas mixtures. Further, correctness of Xenon

update may have great importance for development of micro-pattern gas detectors recently

produced in CERN RD51 project.