Title :
On the possibility of experimental observation of a negative component of the transient DC photoconductivity caused by geminate ion pairs in nonpolar liquids
Author :
Tolmachev, A.V. ; Bartczak, W.M. ; Kroh, J.
Author_Institution :
Inst. of Appl. Radiat. Chem., Tech. Univ. of Lodz, Poland
Abstract :
Transient DC conductivity connected with geminate ion pairs in a nonpolar liquid is calculated on the basis of the Onsager model for conditions under which a significant negative current component can be observed. Two computational techniques are used: a finite-difference scheme and stochastic simulation of charge diffusion and recombination. The conditions for the experimental observation of the negative current during the pulse photoionization of an organic additive dissolved in a nonpolar liquid are considered. Calculations are performed for liquid hydrocarbons with low mobility of excess electrons, such as n-hexane and methylcyclohexane
Keywords :
dielectric properties of liquids and solutions; difference equations; electrical conductivity of liquids; organic compounds; photoconductivity; photoionisation; Onsager model; charge diffusion; finite-difference scheme; geminate ion pairs; liquid hydrocarbons; methylcyclohexane; n-hexane; negative current component; nonpolar liquids; organic additive; pulse photoionization; stochastic simulation; transient DC photoconductivity; Chemicals; Chemistry; Conductivity; Differential equations; Electrons; Finite difference methods; Ionization; Liquids; Photoconductivity; Stochastic processes;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1990. ICDL 1990. Conference Record., 10th International Conference on
Conference_Location :
Grenoble
DOI :
10.1109/ICDL.1990.202864
