摘要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.
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.
[1] Peisert A and Sauli F 1984 CERN report 84-0811 [2] Yamashita T, Kobayashi H and Konaka A 1989 Nucl.Instrum. Methods A 283 709 [3] Yamashita T, Kurashige H and Morii M M 1992 Nucl.Instrum. Methods A 317 213 [4] Colas P, Delbart A and Derre J 2002 Nucl. Instrum.Methods A 478 215 [5] Lukin LV 2003 Chem. Phys. 291 261 [6] Marinho P R B, Guedes G P and Barbosa A F 2005 Rad.Meas. 39 515 [7] Lisovskiy V, Booth J P and Landry K 2006 J. Phys. D 39 660 [8] Kusano H, Mimura M and Kobayashi S 2008 Jpn. J. Appl.Phys. 47 6475 [9] Bunemann O, Cranshaw T E and Harvey J A 1949 Can. J.Res. A 27 191 [10] Ito N, Baba M and Matsuyama S 1994 Nucl. Instrum.Methods A 337 474 [11] Zhang G, Chen J and Tang G 2006 Nucl. Instrum.Methods A 566 615 [12] Zhang G, Zhang J and Cao R 2008 Nucl. Sci. Eng. 160 123 [13] Khriachkov V A and Goverdovski A A 1997 Nucl.Instrum. Methods A 394 261 [14] Kornilov NV, Khriatchkov V A and Dunaev M 2003 Nucl.Instrum. Methods A 497 467 [15] Jastaniah S D and Sellin P J 2004 Nucl. Instrum.Methods A 517 202 [16] Bardelli L, Poggi G and Bini M 2004 Nucl. Instrum.Methods A 521 480 [17] Giorginis G and Khryachkov V 2005 Nucl. Instrum.Methods A 538 550 [18] Khryachkov V A, Dunaeva I V and Dunaev M V 2003 Instrum. Exp. Technol. 46 804 [19] Neves P N B, Conde C A N and Tavoral L M N 2007 Nucl. Instrum. Methods A 580 66
2009, Vol. 26 
