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

Experiments related to the electron-cesium-atom momentum-transfer cross section $Q\left(v\right)\mathrm{}$ in the range of energies $\epsilon =\frac{m{v}^2}{2}$ 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 $Q\left(v\right)\mathrm{}$ until the best fit to all data is obtained. As a result an almost unique curve $Q\left(v\right)\mathrm{}$ is found so that the rms deviation of the experimental values from the calculated ones is 20%. The recommended dependence $Q\left(v\right)\mathrm{}$ 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%.