【作者】 王洪建； 李泽仁； 肖沙里； 叶雁； 阳庆国；

【Author】 WANG Hong-jian~(1,2,3),LI Ze-ren~1,XIAO Sha-li~3,YE Yan~1,YANG Qing-guo~1 (1.National Key Laboratory of Shock Wave and Detonation,Physics Institute of Fluid Physics,CAEP,Mianyang 621900,China; 2.The Key Laboratory of Optoelectronic Technology and System,Ministry of Education,Chongqing University,Chongqing 400030,China; 3.Chongqing Engineering Technology Research Center for Information Management in Development, Chongqing Technology and Business University,Chongqing 400067,China)

【机构】 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室； 重庆大学光电技术及系统教育部重点实验室； 重庆工商大学 发展信息管理工程技术研究中心； 重庆工商大学发展信息管理工程技术研究中心；

【摘要】 X射线光谱仪是空间和实验室高温等离子体诊断的一种重要的工具,其色散元件是X射线衍射的关键器件。通过特定工艺对晶体表面进行处理,能够提高晶体对X射线的衍射效率。将PET、Mica、α-石英和LiF晶体劈成80mm×10 mm的晶体薄片,其中LiF晶体厚度研磨为1mm,其余三种晶体厚度为0.2mm。将LiF晶体加热到400℃,然后用折弯机进行弯曲,在空气中降到室温,使其发生位错现象。在波长为0.154nm的X射线衍射仪上进行试验,经晶体后获得X射线衍射谱线,其中Mica球弯晶获得多级衍射线,经过表面处理的LiF晶体获取的X射线强度比末处理的高2倍。结果表明晶体表面经过处理后更适合高能X射线诊断研究。更多还原

【Abstract】 Special spectroscopy of x-ray represents one important diagnostic tool to ascertain the presence of electron beams in high-temperature plasmas of universe and laboratory,whose disperse component was a key part of spectrometer.It could enhance diffractive efficiency by processed crystal surface with specific technique.Those crystals were cleaved slice of 80mm×l0 mm,with LiF crystal thickness of 1mm,other crystals thickness of 0.2mm.LiF crystal was heated up to about 400°C,then bended by curved-machine and cooled to room temperature by air,resulting a so-called dislocation phenomenon which leading to enhanced diffractive efficiency.The experience were carried on a X-ray diffractometer(XRD) with wavelength of 0.154nm.Muti-diffractive phenomenon happened on Mica spherical surface crystal.Double intensity was achieved on processed crystal surface compared to original crystal.The experimental results showed that it was more suitable to diagnose high energy X-ray after treating the crystal surface.更多还原