Measurement of electron-drift velocity in Ar+CH4 mixtures with double-grid method

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作者：
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China [1 ]
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来源：
Yuanzineng Kexue Jishu | 2008年 / 8卷 / 691-696期
关键词：
Digitizers - Electron drift time - Electron drift velocity - Grid methods - Induced signal - Methane mixtures - Wave forms;
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摘要：
A new method for rapidly and accurately measuring the electron-drift velocity was described in detail. This method is based on analyzing the induced signals of double-grid of an ionization chamber to determine the electron-drift time between the two grids. The waveform digitizer was employed to record pulses from the two grids of the ionization chamber. The electron-drift velocity was measured as the function of the reduced electric field for 8 different ratios of argon-methane mixtures. A formula for calculating electron-drift velocity in any ratio of argon-methane mixtures was presented.
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