BrukerD8衍射仪上PANalyticalX光管焦斑的调整.pdfVIP

现代科学仪器 第2期2011年4月 44 Modern Scientific Instruments No.2 Apr. 2010 Bruker D8衍射仪上PANalytical X光管焦斑的调整 薛青松 （华东师范大学化学系/上海市绿色化学与化工过程绿色化重点实验室上海 200062） 摘　要　X 光管是 X 射线衍射仪的核心元件之一，但其价格昂贵且易老化，不同厂家生产的 X 光管规格又不尽相同，这 给仪器的维修带来较大困难，寻找可替代光管及加深对其认识具有重要的现实意义和应用价值。本文在Bruker D8 ADVANCE型 X射线粉末衍射仪上，采用PANalytical公司生产的X-ray陶瓷光管代替其原配光管，在对光管底盖做了适当的调整，使光管和 底盖间错位90o 后，X光路由点焦斑转变为线焦斑，发现仪器的灵敏度较调整前提高一倍，同原配Simens公司生产的陶瓷光管 相当。 关键词 Bruker;陶瓷光管;X射线焦斑;衍射仪 中图分类号 O348 X-ray Focus Adjustment of Ceramic Tube Produced by PANalytical for XRD of Bruker D8 ADVANCE Xue Qingsong (Shanghai Key Laboratory of Green Chemistry and Chemical Process, Chemistry of Department, East China Normal University, Shang- hai 200062, China) Abstract X-ray tube is one of the core components of X-ray diffractometer. However, it is expensive and easy to age, and the specifi cations of X-ray tubes from various manufacturers are different, which gives more diffi culties to the instru- ment maintenance. Finding alternatives to X-ray tube and deepening their understanding are of great practical signifi cance and application value. In this paper, the fi rst wife tube made by Simens was deplaced by PANalytical ceramic X-ray tube for Bruker D8 ADVANCE X-ray powder diffractometer, and the performance was tested in detail. After a rotation of 90o between the tube and base plate, it was found that the X-ray path was changed from spot focus to line focus, and the instru- ment sensitivity was doubled and similar with the fi rst wife ceramic tubes. Key words Bruker; Ceramic tube; X-ray focus; Diffractometer 自 X 射线被发现以来，X 光管作为主要的射线 源在生物、医学、工业、科研等领域得到了广泛的应 用 , 并产生了巨大的经济效益和社会效益 [1,2] 。X 射 线粉末衍射仪用进口的 X