Analysis of data from several experimental groups on electron mobility in dense neutral gases from 3 to 300 K reveals the existence of a correction to the mobility arising from incoherent multiple scattering that is proportional to $\frac{1}{{\mathrm{kl}}_o}$. This correction overwhelms the traditionally used $\frac{1}{{\left({\mathrm{kl}}_o\right)}^2}$ term arising from coherent backscattering and dominates the gas density dependence of the mobility of thermal electrons in helium. We also reanalyze Si:P data above the metal-insulator transition in terms of these incoherent scattering corrections.

• Received 11 December 1991

DOI:https://doi.org/10.1103/PhysRevB.45.8837