The MCNPX and TRansport of Ions in Matter (TRIM) Monte Carlo codes were used in this study.  The calculated CSDA ranges by MCNPX and TRIM in water were first benchmarked to International Commission on Radiation Units and Measurement 49 published data for water, and found to be within 1% with a 1.4-mm maximum difference.  The MCNPX and TRIM results for CSDA ranges agreed with each other to within 2.7% for EBT3 film and 4.4% for EBT-XD film.  The overall uncertainties of the MCNPX and TRIM-derived CSDA ranges were 3% and 1.3%, respectively.



MCNPX
The MCNPX and TRansport of Ions in Matter (TRIM) Monte Carlo codes were used in this study.  The calculated CSDA ranges by MCNPX and TRIM in water were first benchmarked to International Commission on Radiation Units and Measurement 49 published data for water, and found to be within 1% with a 1.4-mm maximum difference.  The MCNPX and TRIM results for CSDA ranges agreed with each other to within 2.7% for EBT3 film and 4.4% for EBT-XD film.  The overall uncertainties of the MCNPX and TRIM-derived CSDA ranges were 3% and 1.3%, respectively.



TRIM
Utilizing the published International Commission on Radiation Units and Measurement 49 data for the water mass stopping power and CSDA ranges, the mass stopping powers of EBT3 and EBT-XD films were derived using the approximation proposed by Newhauser and Zhang in 2009.



International Commission on Radiation Units and Measurement 49 data
Utilizing the published International Commission on Radiation Units and Measurement 49 data for the water mass stopping power and CSDA ranges, the mass stopping powers of EBT3 and EBT-XD films were derived using the approximation proposed by Newhauser and Zhang in 2009.



Newhauser and Zhang in 2009