Methods for dose measurements in small phantoms irradiated at BNCT epithermal column

• Friche-gel was used for attaining dose profiles in small phantoms exposed to the BNCT beam of LVR-15 reactor.
• The various dose contributions having different RBE were separated.
• TLD-700 detectors were used to map gamma dose and thermal neutron fluence in the same phantom geometries.
• The good consistency of results has proven the suitability of the proposed methods.

Suitable dosimeter methods have been proposed and tested, to measure the different dose contributions in small phantoms exposed to epithermal/thermal neutron beams designed for BNCT. One method is based on Fricke-gel dosimeter in small tubes of 2.8 mm of external diameter, that allow determining profiles of gamma dose and of boron dose. The other method is based on the use of TLD-700 chips, from whose answer the contribution of thermal neutrons is subtracted by means of appropriate parameters of the glow curve.