Effect of negative electron mobility in a mixture of argon, molecular nitrogen and optically excited lithium vapours

Parametric computations of the electron energy distribution function and of the electron mobility in a photoplasma of a lithium vapour mixture: with a rgon and molecular nitrogen are presented. The possibility of the occurrenc e of a steady-state negative electron mobility when using a certain ratio o f mix components under optical resonant excitation of the Li(2S-2P) transit ion is considered. The critical plasma parameters (the lithium excited atom ic density, the temperature of the vibrational distribution of nitrogen mol ecules, the plasma ionization degree, the external electric field strength) determining this effect are revealed.