Depth equalization of the dose when irradiated by electrons at different angles

• Дата: 2020
• Автори: Rudychev, V.G., Lazurik, V.T., Rudychev, D.V., Rudychev, Y.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2020
• Назва видання: Вопросы атомной науки и техники
• Теми: Computing and modelling systems
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/194577
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Depth equalization of the dose when irradiated by electrons at different angles / V.G. Rudychev, V.T. Lazurik, D.V. Rudychev, Y.V. Rudychev // Problems of atomic science and tecnology. — 2020. — № 5. — С. 120-124. — Бібліогр.: 7 назв. — англ.

The possibility of decreasing the depth-dose inhomogeneity in polyethylene with double-sided and one-sided electron irradiation at different angles with a maximum efficiency of beam use is investigated. The least squares method was used to determine the optimal parameters, the thickness of the object, and the fraction of the beam incident on the object at angles Θ = 0° and Θ ≠ 0°. When irradiating with a main beam with an angle Θ = 0° and an additional one with Θ = 70°, it was shown that at an efficiency of ≈ 97%, the technique allows reducing the deposited dose inhomogeneity in objects from 70%, 51% and 38% to ~ 17%, and with filters from Al (efficiency ≈ 94%) to ~ 5%, for electron energies of 2, 5, and 9 MeV respectively.