论文部分内容阅读
在同步辐射装置中,气体电离室是定标光束线能量和评估能量分辨率的一个重要实验装置。为了摆脱电极探针式电离室的气体展宽对束线能量分辨率测定的限制,本文将微通道板(Microchannel Plate,MCP)应用于同步辐射光束线中的电离室,研制成功了具有高能量分辨率的电离吸收谱的探测系统。利用此系统测量标准气体在X射线入射时的电离吸收谱,通过分析测量所得谱线中吸收峰的展宽,可获得光束线的仪器展宽,本文以Ar的吸收谱为例给出了测量结果。
In synchrotron radiation units, gas ionization chambers are an important experimental device for beam energy calibration and energy resolution evaluation. In order to get rid of the limit of gas beam energy resolution of the electrode probe ionization chamber, Microchannel Plate (MCP) is applied to the ionization chamber in the synchrotron radiation beamline. The successful development of a high energy resolution Rate of ionization absorption spectrum of the detection system. Using this system to measure the ionization absorption spectrum of the standard gas when it is incident on X-ray, the broadening of the beam line can be obtained by analyzing the broadening of the absorption peak in the obtained spectrum. The measurement results of the absorption spectrum of Ar are given in this paper.