Initial approach to application of gamma spectroscopy to alpha particles dosimetry in BNCT

The aim of the study is to show a method of real-time determination of the dose deposited in a tissue-like medium by alpha-particles emitted from the 10B(n,alpha)7Li reaction. The applied research method is to determine the correlation between the measured density of alpha-particle traces and measured in real time the 478 keV prompt-gamma rays derived from the 10B(n,alpha)7Li reaction. To achieve this aim, an appropriate construction of an experimental set-up is needed. The experimental set-up built for the purpose of the measurements carried out in the MARIA Reactor at the National Centre for Nuclear Research in Swierk, Poland, is presented. The main challenges related to obtaining optimal conditions for the measurement of the 478 keV gamma photons; the preliminary results of spectrometric measurements and further studies are also discussed.