Abstract
We present an approach to use Al2O3:C,Mg-based fluorescent nuclear track detectors (FNTDs) and confocal laser scanning microscopy as a semiautomatic tool for fluence measurements in clinical ion beams. The method was found to cover a linear energy transfer (LET) range from at least L-infinity(Al2O3) = 0.5 keV/mu m to 61,000 keV/mu m with a detection efficiency >= 99.83% (20 MeV protons) at particle fluences up to at least 5 x 10(7) per cm(2). Our technique allows to determine the spatial fluence distribution on a microscopic scale and enables detailed track-by-track comparison studies between different fluence detectors. (c) 2013 Elsevier Ltd. All rights reserved.
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