DOAJ Open Access 2021

Cross Sections and Rate Coefficients for Vibrational Excitation of H<sub>2</sub>O by Electron Impact

Mehdi Ayouz Alexandre Faure Jonathan Tennyson Maria Tudorovskaya Viatcheslav Kokoouline

Abstrak

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 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 non-LTE spectra of water in various astrophysical environments.

Topik & Kata Kunci

Nuclear and particle physics. Atomic energy. Radioactivity

Penulis (5)

Mehdi Ayouz

Alexandre Faure

Jonathan Tennyson

Maria Tudorovskaya

Viatcheslav Kokoouline

Format Sitasi

APA MLA BibTeX

Ayouz, M., Faure, A., Tennyson, J., Tudorovskaya, M., Kokoouline, V. (2021). Cross Sections and Rate Coefficients for Vibrational Excitation of H<sub>2</sub>O by Electron Impact. https://doi.org/10.3390/atoms9030062

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Informasi Jurnal

Tahun Terbit: 2021
Sumber Database: DOAJ
DOI: 10.3390/atoms9030062
Akses: Open Access ✓