Collisional rates for vibrational-rotational transitions in circumstellar SiO masers

Details Collisional rates for vibrational-rotational transitions in circumstellar SiO masers Collisional rates for vibrational-rotational transitions in circumstellar SiO masers

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265l..29b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 265, Feb. 1, 1983, p. L29-L33.

Astronomy and Astrophysics

Astrophysics

39

Collision Rates, Electron Transitions, Masers, Silicon Oxides, Stellar Envelopes, Late Stars, Molecular Collisions, Molecular Rotation, Quantum Mechanics, Stellar Temperature, Vibrational Spectra

Scientific paper

Calculations for rotational population inversion in circumstellar SiO masers require collisional rates for vibrational-rotational transitions. This Letter reports quantum mechanical, state-to-state collisional rate coefficients for pure rotational and vibrational-rotational transitions among the first three vibrational stages of SiO. These are expressed in terms of simple two-parameter power-law fits accurate in the temperature range 1000-3000K.

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