CAJ | 학술논문

基于实验室X射线衍射仪，利用Cu X射线管作为光源，对PET晶体的高阶衍射效率进行标定。通过选取适宜厚度的滤片，控制X射线管电压，抑制Cu Kβ及轫致辐射，将Cu Kα单能化。实验结果表明，在Cu Kα能点，PET晶体的二阶积分衍射效率是一阶的14．36％，三阶积分衍射效率是一阶的4．07％；Cu Kα1最大峰值比，二阶衍射为一阶的7．7％，三阶衍射为一阶的1．3％。该标定方法快速高效、方便灵活，为X射线光谱的定量化测量提供了数据支撑，是同步辐射晶体标定的有力补充。
기우실험실X사선연사의，이용Cu X사선관작위광원，대PET정체적고계연사효솔진행표정。통과선취괄의후도적려편，공제X사선관전압，억제Cu Kβ급인치복사，장Cu Kα단능화。실험결과표명，재Cu Kα능점，PET정체적이계적분연사효솔시일계적14．36％，삼계적분연사효솔시일계적4．07％；Cu Kα1최대봉치비，이계연사위일계적7．7％，삼계연사위일계적1．3％。해표정방법쾌속고효、방편령활，위X사선광보적정양화측량제공료수거지탱，시동보복사정체표정적유력보충。
On the automatic X-ray diffractometer ( XRD) ,based on the stability and precision control of θand 2θ goniometer , special plane crystal holder was made .Bremsstrahlung and Cu Kβline are attenuated for 5 or-ders by 40 μm-thick pure Nickel filter in 15 kilo-voltage and 20mA supply to X -ray Cu tube, X-ray source of Cu target is to be Cu Kαmonochromatic source ,transmission coefficient of Nickel filter is the criterion of Cu Kαmonochromatic source.For X-ray Pentaerythritol(002) crystal,integral diffraction coefficient of 1-3 order diffraction on Cu Kαenergy were calibrated .The results show that the 2nd order and the 3rd order is only 14.36%and 4.07%, the Cu Kα1 intensity ratio of 2nd order and the 3rd order is only 7.7%and 1.3%, comparing the 1st order diffraction.This kind of calibration is efficient and convenient on XRD in common labo-ratory .