Cross Sections and Rate Coefficients for Vibrational Excitation of H2O by Electron Impact

Cross Sections and Rate Coefficients for Vibrational Excitation of H2O by Electron Impact

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Cross-sections and thermally averaged rate coefficients for Automotive relays vibration (de-)excitation of a water molecule by electron impact are computed; one and two quanta excitations are considered for all three normal modes.The calculations use a theoretical approach that combines the normal mode approximation for vibrational states of water, a vibrational frame transformation employed to evaluate the scattering matrix for vibrational transitions and the UK molecular R-matrix code.The interval of applicability of the rate coefficients is from 10 to 10,000 K.

A comprehensive set of calculations is performed to assess uncertainty of the obtained data.The results OSTEOMOVE EX STRENGTH should help in modelling non-LTE spectra of water in various astrophysical environments.