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Radiation Protection Dosimetry Advance Access originally published online on February 22, 2005
Radiation Protection Dosimetry 2005 113(1):40-46; doi:10.1093/rpd/nch426
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org

Monte Carlo study of MOSFET dosemeter characteristics: dose dependence on photon energy, direction and dosemeter composition

Brian Wang1, X. George Xu1 and Chan-Hyeong Kim2,*

1 Nuclear Engineering and Engineering Physics Program, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
2 Nuclear Engineering Department, Hanyang University, 17 Haengdang-dong, Sungdong-gu, Seoul, 133-791, Korea

* Corresponding author: Email: chkim{at}hanyang.ac.kr

MOSFET dosemeters are emerging as a versatile tool in various medical physics and health physics dose measurements. It is an important but difficult task to understand their energy and directional dependences because of their unique features. This paper presents a study to characterise a MOSFET dosemeter using Monte Carlo simulation method. Monoenergetic photon beams ranging from 15 to 6 MeV were simulated to study the energy and angular dependences. The results were compared with published experimental data. The Monte Carlo model also provided insightful information on optimising the dosemeter design by examining how various regions of the dosemeter contributed to the dose. Detailed energy deposition processes were further analysed by tracking individual particles inside the dosemeter.


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B. Wang and X. G. Xu
Measurements of non-target organ doses using MOSFET dosemeters for selected IMRT and 3D CRT radiation treatment procedures
Radiat Prot Dosimetry, February 1, 2008; 128(3): 336 - 342.
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