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| The Affect of X-rays Tube Parameters Simulated by EGSnrc on Low-energy Spectrum |
| DUAN Xiao-juan1,2,WU Jin-jie2,YANG Yuan-di2 |
1.Chengdu University of Technology,Chengdu, Sichuan 610059, China
2. National Institute of Metrology Beijing, 100013, China |
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Abstract The initial energy spectrum of X-rays tube was studied.On the basis of the theoretical analysis, Monte-carlo simulation program (EGSnrc) is adopted to simulate the low-X rays energy spectrum, which is affected by the focus size of X-ray, anode materials, angle, thickness and radius of the target.The results show that the influence of focus size on energy spectrum will be stabilized within 1% along with the increase of energy; the atomic number of target material is higher, the greater the strength of the spectral lines; the average energy of spectrum will be reduced along with the increase of anode target angle. When target thick is greater than electronic range the influence of target thick can be ignored and the larger target area will cause the photon loss.
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［1］张振光.X射线球管的结构、原理及常见故障分析［J］.医疗卫生装备,2011,（3）:124-125.
［2］祁景玉.X射线结构分析［M］.上海:同济大学出版社, 2003, 2-3.
［3］费鹏翔,包尚联.利用Monte Carlo方法研究X射线球管阳极靶角度对输出光谱的影响［C］//中国仪器仪表学会,浙江,宁波,2009,171-176.
［4］龙继东,石金水,禹海军,等.厚靶韧致辐射特性的数值模拟研究［J］.高能物理与核物理.2004, 28(11):1238-1243. |
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2011, Vol. 32 
