Enhancement of an X-Ray Laboratory

点击翻译按钮获取中文摘要

The Departments of Chemistry and Geology are upgrading their respective curricula in the areas of x-ray diffractometry and spectrometry by adding a computerized control and data analysis system to their x-ray diffractometer, and by replacing an obsolete ball mill used to prepare geological materials for quantitative analysis using an x-ray spectrometer. Students and faculty have the capability of: collecting and storing x-ray diffraction patterns digitally as computer files where the data can be easily accessed, processed, and analyzed; doing phase analysis of polycrystalline materials using an up-to-date version of the JCPDS powder diffraction file (on electronic media) and computerized search/match software; quantitatively determining the percentages of different phases in multiphase, crystalline materials; and preparing geological materials for quantitative chemical analysis with a quiet, non-contaminating pulverizing system. Students are being provided with valuable experience in the use of computer-controlled instrumentation for data collection and analysis.