Theory of electric conductivity measurements by an electrostatic probe in an atmospheric low-density continuum ionized gas

A method has been developed and used to obtain theoretical predictions of the electric conductivity measured by an electrostatic probe in an atmospheric ionized gas, i.e., with mean free path very much less than probe radius. Three different methods for conductivity measurements have been analyzed: (1) attracting potential method; (2) transient response method; (3) space potential method.