Abstract
The response of radiochromic dosimeters based on silicone is influenced by the dose-rate quenching and also the linear energy transfer (LET). However, the impact of curing time and composition on quenching has not been fully characterized. We investigated two dosimeter compositions, with 5% and 9% curing agent, which cured for 1, 3 or 5 days and that subsequently were irradiated with an 80 MeV proton beam with three different beam currents. Monte Carlo simulations were utilised for the estimation of dose, dose rate and LET profiles. We found a significant decrease in LET-dependent quenching with curing time, but no significant decrease in dose-rate-dependent quenching.
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