Monte Carlo simulation of indoor external exposure due to gamma-emitting radionuclides in building materials

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DENG Jun, CAO Lei and SU Xu. Monte Carlo simulation of indoor external exposure due to gamma-emitting radionuclides in building materials[J]. Chinese Physics C, 2014, 38(10): 108202. doi: 10.1088/1674-1137/38/10/108202
DENG Jun, CAO Lei and SU Xu. Monte Carlo simulation of indoor external exposure due to gamma-emitting radionuclides in building materials[J]. Chinese Physics C, 2014, 38(10): 108202.  doi: 10.1088/1674-1137/38/10/108202 shu
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Received: 2013-12-09
Revised: 1900-01-01
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Monte Carlo simulation of indoor external exposure due to gamma-emitting radionuclides in building materials

    Corresponding author: DENG Jun,
    Corresponding author: SU Xu,

Abstract: The use of building materials containing naturally occurring radionuclides,such as 40K, 238U, 232Th and their progeny, could lead to external exposures to the residents of such buildings. In this paper, a set of models are constructed to calculate the specific effective dose rates (the effective dose rate per Bq/kg of 40K, the 238U series, and the 232Th series) imposed on residents by building materials with the MCNPX code. The effect of chemical composition, position concerned in the room and thickness as well as density of material is analyzed. In order to facilitate more precise assessment of indoor external dose due to gamma-emitting radionuclides in building materials, three regressive expressions are proposed and validated by measured data to calculate specific effective rates for 40K, the 238U series and the 232Th series, respectively.

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