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Updated: Jun 5, 2026

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
Published on: May 9, 2014
The non-uniformity correction factor for the cylindrical ionization chambers in dosimetry of an HDR Ir brachytherapy
Bishnu Majumdar1, Narayan Prasad Patel, V Vijayan
1Department of Physics, Govt. College of Science, Raipur, India.
Abstract:
The aim of this study is to derive the non-uniformity correction factor for the two therapy ionization chambers for the dose measurement near the brachytherapy source. The two ionization chambers of 0.6 cc and 0.1 cc volume were used. The measurement in air was performed for distances between 0.8 cm and 20 cm from the source in specially designed measurement jig. The non-uniformity correction factors were derived from the measured values. The experimentally derived factors were compared with the theoretically calculated non-uniformity correction factors and a close agreement was found between these two studies. The experimentally derived non-uniformity correction factor supports the anisotropic theory.
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