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NUCLEAR PHYSICS

Measurement of Electron-Drift Velocity in Ar+CH4 Mixtures Using Double-Grid Method

Zhang Jia-Guo et al 2009 Chinese Phys. Lett. 26 112901 (4pp)   doi: 10.1088/0256-307X/26/11/112901  Help

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Zhang Jia-Guo, Zhang Guo-Hui and Chen Jin-Xiang
State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871
E-mail: guohuizhang@pku.edu.cn (Zhang Guo-Hui)

Abstract. Based on analyzing the induced signals from the double-grids of an ionization chamber, the electron-drift time between the two grids is determined and the electron-drift velocity is derived. A waveform digitizer is employed to record pulses from the two grids of the ionization chamber. The electron-drift velocity is measured as a function of the reduced electric field E/p for eight different ratios of Ar+CH4 mixtures. By analyzing the experimental data of this study, self-consistency of experimental data is achieved, and formulae for calculating electron-drift velocity in any ratio of Ar+CH4 mixtures are obtained.

PACS numbers: 29.40.Cs, 51.10.+y, 52.25.Fi

Print publication: Issue 11 (November 2009)
Received 27 July 2009

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