Graduate Thesis Or Dissertation
 

Monte Carlo derived absorbed fractions in a voxelized model of a rainbow trout

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pc289n36m

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  • The International Commission on Radiological Protection (ICRP) has modeled twelve reference animals and plants (RAPs) with simple geometric shapes to be used when estimating radiation dose to non-human biota (NHB). In recent years, there has been interest in creating more realistic models in order to better understand the radiation interactions that take place in NHB. The work presented here details the creation of a voxelized model of a rainbow trout (Oncorhynchus mykiss) and presents absorbed fractions (AFs) of energy in each identified organ derived via Monte Carlo methods. AFs were calculated at several discrete energies: 0.01, 0.015, 0.02, 0.03, 0.05, 0.1, 0.2, 0.5, 1.0, 1.5, 2.0 and 4.0 MeV for photons and 0.1, 0.2, 0.4, 0.5, 0.7, 1.0, 1.5, 2.0 and 4.0 MeV for electrons. The AFs were shown to be dependent on incident radiation energy, as well as the source and target’s mass and geometry. This data is consistent with voxelized models of other small organisms.
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