Dual-Particle Dosemeter Based on Organic Scintillator

Abstract

Traditionally available handheld dosemeters are generally sensitive to only one type of radiation: neutrons or photons. Some dosemeters also rely on very specific attenuation correlations between response and dose, are not scalable in size and multiple dosemeters are required to characterise mixed-particle fields. The research presented here serves as a proof-of-concept for a method to simultaneously measure dose rates from neutrons and photons using a particle discriminating organic scintillation detector without the need for spectral deconvolution. The method was compared with traditional instruments and to simulation. Isotopic photon dose rates measured with this method were within 4% of simulated truth, whereas fission spectrum neutron dose rates were measured within 21%. Measurements of dose rates from both particles agree with simulated truth better than traditional instruments. This new method allows for measurement of dose equivalent from both neutrons and photons with a single instrument and no reliance on spectral deconvolution.

Organic Scintillator-Fibre Sensors for Proton Therapy Dosimetry: SCSF-3HF and EJ-260

“…Both scintillating materials have been and continue to be studied for radiation detection, dosimetry, and monitoring applications [25][26][27][28][29][30]. In addition, a number of scintillator fibre sensors, both organic and inorganic, have been investigated for their dosimetric potential in proton and neutron radiation [31][32][33][34][35][36][37][38][39][40]; however, thus far, the proposed specific use of these materials has not yet been explored.…”