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(1) 前言 X射线萤光分析仪,国外早已成批生产。近几年来,我国许多单位开始研制这种仪器。氟化锂晶体的平晶和弯晶是该仪器的主要分光元件之一,可以说是该仪器的“心脏”。用它可进行钛到重元素以及稀土元素(或19K～92 U)的定性和定量分析。X射线萤光仪常用的氟化锂分光元件是平晶(图1)和弯晶两种形式。平晶的制造比较简单,但是,反射的X射线不能聚焦,不能被探测器全部接收,能量损失较大。弯晶的制造工艺虽然比较复杂,但却克服了这一
(1) Foreword X-Ray Fluorescent Analyzer, overseas already mass-produced. In recent years, many units in our country have started to develop such instruments. Lithium fluoride crystals and bent crystal flat crystal is one of the main components of the instrument can be said that the instrument’s “heart.” Use it for qualitative and quantitative analysis of titanium to heavy elements and rare earth elements (or 19K to 92 U). Lithium fluoride spectrometer commonly used in X-ray fluorescence spectrometer is flat (Figure 1) and bent crystal two forms. Flat crystal manufacturing is relatively simple, however, the reflected X-ray can not be focused, can not be fully received by the detector, the energy loss. Bent crystal manufacturing process is more complicated, but overcomes this one