摘要
分析了传统的X射线荧光镀锌板锌层测量法,提出了基于全反射X射线荧光分析技术的镀锌板锌层测量方法,并在MCNP中建立X射线全反射模型进行模拟仿真。X射线全反射发生时锌层将原级X射线几乎反射,并在镀锌板法向方向伴随产生少量X射线荧光。针对此特征X射线荧光直接进行分析有效地减少了X射线源的散射本底,提高了测量精度,并且降低了所需源X射线的能量。模拟结果验证了镀锌板上发生X射线全反射的可行性,为实际应用提供了理论依据。
This paper analyzes the traditional X-ray fluorescence method to measure the zinc layer thickness of galvanized sheets layer.It proposes a measuring method of galvanized zinc layer based on total reflection X-ray fluorescence analysis technology,and the X-ray total reflection model is set up for simulation in the MCNP.When the X-ray total reflection occurs,zinc layer will almost make the X-ray source reflect completely,associated with a small amount of X-ray fluorescence producing in the normal direction of the galvanized sheet.Using this X-ray fluorescence to analyze directly can effectively reduce the scattering background of source X-ray,improve the accuracy of measurement and reduce the required source X-ray energy.The Simulation results demonstrate that the feasibility of the X-ray total reflection on galvanized sheet,it provides the theoretical basis for practical application.
出处
《光散射学报》
北大核心
2017年第3期285-290,共6页
The Journal of Light Scattering
基金
湖北省重大科技创新计划项目(2013AAA011)
湖北省科技支撑计划项目(2014BEC056)
湖北省教育厅科研计划重点项目(D20151102)
关键词
X射线荧光分析
全反射X射线荧光分析
MCNP模拟
镀层测厚
X-ray fluorescence analysis
total reflection X-ray fluorescence analysis
MCNP simulation
measurement of coating thickness