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Original Article

Korean Journal of Medical Physics 2006; 17(4): 224-231

Published online December 25, 2006

Copyright © Korean Society of Medical Physics.

Calculation of Energy Spectra for 6 MeV Electron Beam of LINAC Using MCNPX

MCNPX를 이용한 선형가속기의 6 MeV 전자선에 대한 에너지분포 계산

Jeong Ok Lee, Dong Hyeok Jeong*

이정옥·정동혁*

Department of Radiotechnology, Wonkwang Health Science College, *Department of Radiation Oncology, Wonkwang University Hospital

원광보건대학 방사선과, *원광대학교병원 방사선종양학과

Abstract

The electron energy spectra for 6 MeV electron beam were calculated using a MCNPX code. The head of the linear accelerator (ML6M; Mitsubishi, Japan) was modelled for this study. The energy spectrum of the initial electron beam was assumed to be Gaussian and the mean energy was determined by evaluating the measured and calculated values of

R_50
and dose profiles in air. The energy distributions for electrons and photons at the interested points in the head of the linear accelerator were calculated by appling the initial beam parameters. The effect of contaminant photons on depth dose curves were estimated by the photon energy spectra at the end of the applicator.

KeywordsMCNPX, Electron beam, Energy distribution

Korean Society of Medical Physics

Vol.35 No.3
September 2024

pISSN 2508-4445
eISSN 2508-4453
Formerly ISSN 1226-5829

Frequency: Quarterly

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