Electron mobility in krypton dense gas as functions of electric field strength, temperature, and density

Abstract

Electron mobilities μ were measured in dense gaseous krypton as a function of density normalized electric field E/n at 3.8≤n/1026 molecule m−3≤40 and 152≤T/K≤250. At each density a constant value of the mobility μ0 is attained at low E/n. At fields higher than a threshold (E/n)th μ first increased, passed through a maximum, and then decreased. In the saturated vapor nμ0 decreased with increasing (n,T) while at constant n, nμ0 increased with T. The density dependence of nμ0 is compared to the dielectric screening model of Baird [Phys. Rev. A 32, 1235 (1985)].