Optimum target source term estimation for high energy electron accelerators

Nayak, Malaya K.; Sahu, T K; Nair, Haridas G.; Nandedkar, R. V.; Bandyopadhyay, Tapas Kumar; Tripathi, R.M.; Hannurkar, P.R.

doi:10.1016/j.radphyschem.2016.01.026

Cited by 1 publication

(3 citation statements)

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“…Broadly, the input file contains geometric, material, source and tally specifications pertinent to the model under investigation. This is achieved via cell, surface and data cards (and terms pertinent to variance reduction if desired) defined in the input file [22][23][24][25]. Simulation of a complex environment with many variables, such as radiation shielding, is difficult to derive theoretical results with computer code that applies deterministic methods.…”

Section: Radiation Shielding Simulationmentioning

confidence: 99%

“…In general, the data is considered reliable when coefficient of determination is >0.6 [27] and this was true for all the materials considered in this work. The disagreement apparent above 10 MeV is likely due to photon-neutron reactions, which were not considered in MCNP simulations [22]. Here, concrete is not a single substance, but a mixture of various substances such as clay, iron ore, and limestone, so it is difficult to find any particular tendency.…”

Section: Effective Attenuation Factor For Layered Compositesmentioning

confidence: 99%

“…The disagreement apparent above 10 MeV is likely due to photon-neutron reactions, which were not considered in MCNP simulations [22]. Here, concrete is not a single substance, but a mixture of various substances such as clay, iron ore, and limestone, so it is difficult to find any particular tendency.…”

Section: Effective Attenuation Factor For Layered Compositesmentioning

confidence: 99%

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A Study on the Radiation Shielding and Absorption Effects of Nonwoven Composites by Monte-Carlo Simulation Analysis

Lee

Cha²,

Lim

et al. 2022

Applied Sciences

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The purpose of this study was to investigate the radiation attenuation effect due to reflection and refraction that occurs when radiation passes through the composite material through simulation. The gamma-ray shielding ability of composites with different structures, such as layered composite, fibrous composite, and particle-added composites, was compared. For the layered composites, regardless of the thickness, the gamma-ray attenuation effect due to the structure of the layered composite could not be seen. The simulated attenuation coefficient was found to be different than the theoretical value, which increased with the content of inorganic materials. Assuming that the cesium ions absorbed on the nonwoven fabric are located in the center of the nonwoven fabric and the radioactive material absorbent is used in an appropriate amount, it is expected that more than 50% of gamma rays emitted from radioactive cesium can be shielded. If the nonwoven composites have such a shielding ability, it is expected that after adsorbing 137Cs, the intensity of gamma rays due to the adsorbed radioactive cesium can be partially attenuated, thereby contributing to radioactive waste treatment.

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Section: Radiation Shielding Simulationmentioning

confidence: 99%

Section: Effective Attenuation Factor For Layered Compositesmentioning

confidence: 99%