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- W2913231839 abstract "In this thesis the protection role of Cerrobend, as a material that has maximum applications in radiotherapy centers of electron beam and X-ray, was investigated. Experimental parts of this thesis were accomplished in specialized center of Oncology Radiotherapy of Ardabil Shafaparto. There is a linear accelerator made by Siemens Company in Ardabil Shafaparto center that emits electron beams with 6, 8, 10, 12, 15, and 18 MeV energies to annihilate tumor cells. In this research, the electron emitter system with determined energy and different thicknesses of Cerrobend were simulated by MCNP code and the rate of passed charges calculated by Monte Carlo calculation in the first step. In the experimental part of this research work, different Cerroband blocks with defined thicknesses accomplished by using casting method and calculation results. These blocks irradiated by electron beams with determined energies. Graphical analyze of all obtained results were verified. The obtained results show, when the incident electron energy is up to 10 MeV, a peak observed in passed charge spectrum. It is clear that the emitted X-ray increase for these energies. The graphs show the absorbed energy in shield depends on electron energy and Cerrobend thickness. This depending is not linear and is maximum from 10 to 12 MeV in low thicknesses." @default.
- W2913231839 created "2019-02-21" @default.
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- W2913231839 date "2014-01-01" @default.
- W2913231839 modified "2023-09-24" @default.
- W2913231839 title "Role of shielding in decreasing the energy of the emitted electrons from Lin AC" @default.
- W2913231839 hasPublicationYear "2014" @default.
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