Measurement of relative depth-dose distribution in radiochromic film dosimeters irradiated with 43–70 keV electron beam for industrial application

Matsui, S.; Hattori, Takeaki; Nonaka, Takashi; Watanabe, Yasuaki; Morita, Ippei; Kondo, Junichi; Ishikawa, Masayoshi; Mori, Yoshitaka

doi:10.1016/j.radphyschem.2018.01.006

Cited by 4 publications

(1 citation statement)

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“…To acquire dose distributions within an irradiated object, the most desirable method is via MC simulations (IAEA 2010) since it accounts for the geometry of the sample as well as the entire irradiation environment (Mittendorfer and Niederreiter 2020). This method is generally used to obtain depth-dose curves of high-energy electrons to water phantoms for radiotherapy (Kesen et al 2014;Park et al 2016Park et al , 2018Sardari et al 2010), but has also been used to determine doses for E-beams incident on aluminum wedges, radiation dosimeters, and can also be extended for industrial products (Mittendorfer and Niederreiter 2020;Vandana et al 2018;Matsui et al 2018;IAEA 2010). Computer codes typically used are MCNP, Geant4, and PENELOPE (Sempau et al 2001;Batic et al 2013;Peri and Orion 2017).…”

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confidence: 99%

Determination of Dose Distributions by High-energy Electrons in Alumina Pellets Using Monte Carlo Simulations

Hila¹,

Solomon²,

Baule³

et al. 2020

Philipp J Sci

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Electron beam accelerators are broadly used to study the effects of ionizing radiation on the properties of materials. These accelerators are also used to study radiation effects in some important ceramics such as alumina. The produced high-energy electrons at MeV energies will deposit doses that are typically non-uniformly distributed within the entire material. Such distributions provide valuable information regarding the degree of internal and surface changes owing to the irradiation. In the present study, the Monte Carlo (MC) method was used to obtain the dose distributions of high-energy electrons to alumina ceramic in pellet form. The distributions obtained via MCNP5 (Monte Carlo N-Particle version 5) were normalized by experimental values. For the energy of the simulated electrons, both monoenergetic and polyenergetic source electron energies were evaluated. The distributions of the depth-dose, depth-energy, and the top and bottom surface 2D dose mesh were obtained. Results showed that either assumption of monoenergetic or polyenergetic source electron energies resulted in similar depth-dose curves. The depth-energy results showed a larger spread in energy distributions for polyenergetic as compared to monoenergetic source electrons; nonetheless, the average doses for both were similar. The 2D dose maps showed a uniform dose distribution at the top pellet surface and a significantly non-uniform distribution at the bottom of the pellet. These results emphasize the effectiveness of the MC method in determining non-uniform doses within materials, which can be used in quantifying the changes in the material properties at each separate area of the electron irradiated object.

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