Channel type secondary - electron multiplier 形二次电子?倍管
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Microchannel electron multiplier 微通道电子倍增管
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In lab the most often used is electron multiplier and semiconductor type 实验室常用的是电子倍增器和半导体型光二极管。
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In fourth chapter , the quantum efficiency of the electron multiplier was displayed , and the design of monochromator calibration setup was provided . in fact , the setup had been built up 第四章给出探测器效率的标定结果，提出单色仪的标定方案，建立起单色仪标定实验装置。
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Its main purpose is to know different kinds of detecting method . generally , euv and soft x - ray photodetector included five types : ionization gas , semiconductor , electron multiplier and film 总的说来极紫外和软x射线光电探测器的类型有气体电离型、半导体型、电子倍增器以及极紫外和软x射线胶片(干板) 。
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The electron multiplier detector is appropriate to do ordinary detect works for its high sensitive and semiconductor photodiode ( such as silicon diode ) is appropriate to act as transfer standard detect for its high stability 倍增器的灵敏度非常高，适合日常的测量工作；半导体型光电二极管(如si二极管)的稳定性好，适合作传递标准探测器。
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Fundamental of laser 40ar / 39ar dating method : our laboratory has successfully set up the laser microprobe 40ar / 39ar geological dating method . our works include adjustment of the high - gain electron multiplier in mass spectrometer and correction of mass discrimination , adjustment of the laser , test for absorption ability of minerals to laser , designing and manufacturing high - vacuum sample chamber , sample preparation and irradiation , research on the variability of j values on the surface of rock chips , measuring atmospheric argon , determination and correction of blanks and ages , etc . the laser microprobe technique is particularly effective for some geological samples . it can be used , for example , for research of distribution of the components in extremely small samples that are very difficult to be separated and purified and those which contain excess argon 本文首先从常规~ ( 40 ) ar ~ ( 39 ) ar阶段升温定年实验室的改进入手，进而建立了激光~ ( 40 ) ar ~ ( 39 ) ar定年实验室，利用这两种先进同位素地质定年方法，结合其他手段，对青藏高原腹地和北缘的阿尔金断裂系多期地质事件进行了详细的同位素年代学研究：一、参照国际先进实验室的流程，对我们的常规~ ( 40 ) ar ~ ( 39 ) ar阶段升温实验室在样品的预处理、样品的照射条件和系统空白测量及校正等方面进行了改进，使之产出的同位素年代数据更可靠并为国际同行所承认。
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