Electron momentum-transfer cross section in cesium: Fit to the experimental data

Experiments related to the electron-cesium-atom momentum-transfer cross section $Q(v)$ in the range of energies ε=mv²2 from 0.05 to 2 eV are considered in which the following quantities are measured: (a) width of the electron cyclotron resonance, (b) attenuation of microwaves, (c) electrical conductivity in both equilibrium and nonequilibrium pure Cs or Ar - Cs plasmas, (d) electron thermal conductivity, (e) perpendicular electrical conductivity in a strong magnetic field, and (f) electron drift velocity. A convenient algorithm is proposed to vary $Q(v)$ until the best fit to all data is obtained. As a result an almost unique curve $Q(v)$ is found so that the rms deviation of the experimental values from the calculated ones is 20%. The recommended dependence $Q(v)$ can be used for calculations in the range of electron temperatures (or equivalent mean energies) from 500 to 2500 K within an error less than 20%.