Alkali ions mobility in parent vapor

Сеrtain approximations of mobility coefficients for the metal atoms' ions in parent vapor are investigated, a comparison between experimental data was drawn, and Monte Carlo calculations are performed. In contrast to ions of noble gases, ions and atoms of alkali metals have a number of features that must be considered when building a model of ion-atom collisions. Approximations for mobility coefficients for the alkali ions in parent vapor are given, they are valid not only in the weak electric field limit, but also in strong fields, when ion heating enacts in external electric field. On the basis of the analysis of Monte Carlo calculations and comparing them with experimental data on the mobility of alkali metal ions in noble gases, we obtain approximation formulas for the mobility of alkali metal ions in parent vapors. The parameters found earlier for the approximation of the drift velocity of ions of noble gases are also given as a reference material. The parameters obtained in this work for the approximation of the mobility of alkali metal ions in parent vapors can be used to estimate the characteristics of a gas-discharge plasma.