Monte Carlo tools to supplement experimental microdosimetric spectra
(2013) Radiation Protection Dosimetry — Vol. 161, n° 1-4, p. 454-458 (2013)
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- Tissue-equivalent proportional counters (TEPCs) are widely used in experimental microdosimetry for characterising the radi- ation quality in radiation protection and radiation therapy environments. Generally, TEPCs are filled with tissue-equivalent gas mixtures, at low gas pressure, to simulate tissue site sizes similar to the cell nucleus (1 or 2 mm). The TEPC response using Monte Carlo (MC) codes can be applied to supplement experimental measurements. Most of general-purpose MC codes currently available recourse to the condensed-history approach to model the electron transport and do not transport low-energy electrons (<1 keV), which can lead to systematic errors, especially in thin layers and in gas-condensed medium interfaces. In this work, a comparison between experimental microdosimetric spectra of 60Co and 137Cs radiation at different simulated sizes (from 1.0 to 3.0 mm) in pure propane versus simulated spectra obtained with two general-purpose codes FLUKA and PENELOPE, which include a detailed simulation of electron – photon transport in arbitrary materials, including gases, is presented.
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Chiriotti Alvarez, S., Moro, D., Conte, V., Colautti, P., D’Agostino, E., Sterpin, E., & Vynckier, S. (2013). Monte Carlo tools to supplement experimental microdosimetric spectra. Radiation Protection Dosimetry, 161(1-4), 454-458. https://doi.org/10.1093/rpd/nct248 (Original work published 2013)