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1984年3月5日至9日在美国大西洋城(Atlantic City)召开了有关分析化学的匹兹堡会议和展览会(Pittsburgh Conference and Exposition)。当时笔者正在美国,有机会参观了该展览会,着重观看了和电子显微镜配接的X射线能谱仪。会上展出了TN 5500、KEVEX 8000Ⅲ、PGT 4、ORTEC 5000、EDAX 9100/70、EXAC 2000等各种型号的能谱仪。从会上所展出的仪器来看,笔者认为X射线能谱仪正在进入一个新的发展阶段。为了证实上述看法,并进一步了解能谱仪的发展趋势,我们于3月30日又访问了在旧金山附近的TRACOR XRAY公司(TRACOR NORTHERN公司专门生产X射线仪器的一个分公司),在那里仔细观察了TN 5500 X射线能谱仪的操作,并和有关人员进行了技术讨论。笔者认为X射线能谱仪的发展已经历了两个阶段。在初期(1968～1975左右),探测器的分辨率不高,大都只使用多道分析器来存贮和处理能谱,分析精度不高,只能进行定性或
Pittsburgh Conference and Exposition on Analytical Chemistry was held March 5-9, 1984 in Atlantic City, USA. At that time I was in the United States, had the opportunity to visit the exhibition, focusing on the observation and electron microscopy X-ray spectrometer. At the conference, TN5500, KEVEX 8000Ⅲ, PGT 4, ORTEC 5000, EDAX 9100/70 and EXAC 2000 were exhibited. From the exhibition on the display of the instruments, I believe that X-ray spectrometer is entering a new stage of development. To confirm the above and to learn more about the development trend of EDS, we again visited TRACOR XRAY near San Francisco on March 30 (TRACOR NORTHERN, a subsidiary specializing in X-ray equipment), where we carefully observed TN5500 X-ray spectrometer operation, and technical discussions with the relevant personnel. I believe that the development of X-ray spectrometer has gone through two stages. In the early stage (around 1968-1975), the detector resolution was not high, most of them only used the multi-channel analyzer to store and process the energy spectrum, the analysis accuracy was not high, only the qualitative or