Theoretical differential and total cross sections of water-molecule ionization by electron impact

In the present paper, triply, doubly, singly, and total cross sections of the vapor water-molecule ionization are calculated in the distorted-wave Born approximation, without exchange. In these conditions, fair agreements are found with experimental data, specially in the low and intermediate ejected energy domain ${(E}_{e}<{E}_{s},$ where ${E}_{e}$ and ${E}_{s}$ are the ejected and scattered energy, respectively), and an extensive comparison between experimental and theoretical results is given in terms of differential and total cross sections. The present results are also compared to other theoretical ones, specially to results obtained in the plane-wave Born approximation, and in the first-Born approximation frameworks, in order to underline the distortion effect.