Title :
Transport phenomena in point-plane geometry in liquid argon
Author :
Bonifaci, N. ; Denat, A.
Author_Institution :
Lab. d´´Electrostatique et de Mater. Dielectriques, Univ. Joseph Fourier, Grenoble, France
Abstract :
In this paper, indirect measurements of charge-carrier mobilities in liquid argon are reported using space charge limited current. For a point anode, our values correspond to ionic mobilities measured by time-of-flight methods. For a point cathode, the influence of impurity level is very important. In the purest samples of liquid Ar, the highest negative mobility saturates to 2 cm-2/Vs and this seems to be a problem of transport of energetic electrons and not of purity level. This assumption must be confirmed by trying to improve our purification setup
Keywords :
argon; dielectric liquids; electron mobility; impurities; ion mobility; ionic conductivity; space-charge-limited conduction; Ar; charge injection; charge-carrier mobilities; energetic electron transport; impurity level; ionic mobilities; liquid Ar; negative mobility; point anode; point cathode; point-plane geometry; positive mobility; purity level; space charge limited current; transport phenomena; Anodes; Argon; Cathodes; Charge measurement; Current measurement; Electron mobility; Geometry; Impurities; Purification; Space charge;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1996, ICDL '96., 12th International Conference on
Conference_Location :
Roma
Print_ISBN :
0-7803-3560-0
DOI :
10.1109/ICDL.1996.565310
