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Determination of dose components in phantoms irradiated with an epithermal neutron beam for boron neutron capture therapy
Author(s) -
Raaijmakers C. P. J.,
Konijnenberg M. W.,
Verhagen H. W.,
Mijnheer B. J.
Publication year - 1995
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.597447
Subject(s) - ionization chamber , neutron , materials science , neutron capture , thermoluminescent dosimeter , neutron temperature , radiochemistry , dosimetry , irradiation , neutron detection , neutron radiation , imaging phantom , ionization , nuclear medicine , nuclear physics , physics , chemistry , dosimeter , medicine , ion , quantum mechanics
The application of activation foils, thermoluminescent detectors, and ionization chambers has been investigated for the determination of the different dose components in phantoms irradiated with a mixed gamma‐ray and epithermal neutron beam for boron neutron capture therapy. The thermal neutron fluence has been determined using a set of AuAl and MnNi activation foils. TLD‐700 and a Mg(Ar) ionization chamber have been used for the determination of the gamma‐ray dose. The dose from epithermal neutrons has been determined using a TE(TE) ionization chamber. The detector characteristics and the relative sensitivities of the various detectors to the different dose components in the phantom have been determined. The following accuracies (1 standard deviation) in the determination of the different components have been obtained: thermal neutron fluence rate: 5%; gamma‐ray dose rate: 7%; epithermal neutron dose rate: 15%. These values make these detectors suitable for obtaining the complete set of clinical dosimetry data required for patient dose assessment.