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Updated: May 23, 2026

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
Published on: May 9, 2014
Comparison of experimental and calculated calibration coefficients for a high sensitivity ionization chamber
M N Amiot1, M R Mesradi, V Chisté
1CEA-LIST/LNE-LNHB, CE Saclay, 91191 Gif sur Yvette Cedex, France. marie-noelle.amiot@cea.fr
Abstract:
The response of a Vacutec 70129 ionization chamber was calculated using the PENELOPE-2008 Monte Carlo code and compared to experimental data. The filling gas mixture composition and its pressure have been determined using IC simulated response adjustment to experimental results. The Monte Carlo simulation revealed a physical effect in the detector response to photons due to the presence of xenon in the chamber. A very good agreement is found between calculated and experimental calibration coefficients for 17 radionuclides.
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