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

Blog Article

Cross-sections and thermally averaged rate coefficients for 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 Toddler Toy 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 should help in modelling 3Rd Brake Light non-LTE spectra of water in various astrophysical environments.