Geant4 Simulation Study of Dose Distribution and Energy Straggling for Proton and Carbon Ion Beams in Water

被引：0
|
作者：
Zhao, Qiang [1 ]
Zhang, Zheng [1 ]
Li, Yang [1 ]
机构：
[1] North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing Key Lab Pass Safety Technol Nucl Energy, Beijing 102206, Peoples R China
来源：
2016 THE INTERNATIONAL CONFERENCE ON NANOMATERIAL, SEMICONDUCTOR AND COMPOSITE MATERIALS (ICNSCM 2016) | 2016年 / 65卷
关键词：
Monte Carlo simulation; dose distribution; geant4; Bragg peak; THERAPY; RADIOTHERAPY; MODEL; FRAGMENTATION; NE-20;
D O I：
10.1051/matecconf/20166502002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dose distribution and energy straggling for proton and carbon ion beams in water are investigated by using a hadrontherapy model based on the Geant4 toolkit. By gridding water phantom in NxNxN voxels along X, Y and Z axes, irradiation dose distribution in all the voxels is calculated. Results indicate that carbon ion beams have more advantages than proton beams. Proton beams have bigger width of the Bragg peak and broader lateral dose distribution than carbon ion beams for the same position of Bragg peaks. Carbon ion has a higher local ionization density and produces more secondary electrons than proton, so carbon ion beams can achieve a higher value of relative biological effectiveness.
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页数：4
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