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electron multiplier 電子倍增器。

electron optics

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 本文首先從常規~ ( 40 ) ar ~ ( 39 ) ar階段升溫定年實驗室的改進入手,進而建立了激光~ ( 40 ) ar ~ ( 39 ) ar定年實驗室,利用這兩種先進同位素地質定年方法,結合其他手段,對青藏高原腹地和北緣的阿爾金斷裂系多期地質事件進行了詳細的同位素年代學研究:一、參照國際先進實驗室的流程,對我們的常規~ ( 40 ) ar ~ ( 39 ) ar階段升溫實驗室在樣品的預處理、樣品的照射條件和系統空白測量及校正等方面進行了改進,使之產出的同位素年代數據更可靠并為國際同行所承認。

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 倍增器的靈敏度非常高,適合日常的測量工作;半導體型光電二極管(如si二極管)的穩定性好,適合作傳遞標準探測器。

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 總的說來極紫外和軟x射線光電探測器的類型有氣體電離型、半導體型、電子倍增器以及極紫外和軟x射線膠片(干板) 。

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 第四章給出探測器效率的標定結果,提出單色儀的標定方案,建立起單色儀標定實驗裝置。

In lab the most often used is electron multiplier and semiconductor type 實驗室常用的是電子倍增器和半導體型光二極管。

Microchannel electron multiplier 微通道電子倍增管

Channel type secondary - electron multiplier 形二次電子?倍管