Radiation Protection Dosimetry Advance Access published online on June 18, 2007
Radiation Protection Dosimetry, doi:10.1093/rpd/ncm131
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INVESTIGATIONS OF RECOMBINATION CHAMBERS FOR BNCT BEAM DOSIMETRY
ski2
1 Institute of Precision and Biomedical Engineering, Warsaw University of Technology
2 Institute of Atomic Energy, Otwock-
wierk, Poland
* Corresponding author: tulik{at}cyf.gov.pl
A set of cylindrical recombination chambers, including a tissue-equivalent chamber and three graphite chambers filled with different gasesCO2, N2 and 10BF3, was designed for the dosimetry of therapeutic neutron radiation beams used for BNCT. The separation of the dose components is based on differences of the shape of the saturation curve depending on the LET spectrum of the investigated radiation. The measurements using all the chambers were performed in a reactor beam of NRI
e
(Czech Republic) and in the reference radiation fields of a 252Cf radiation source free in air or in filters.