A comment on a mechanism for pumping OH masers

Details A comment on a mechanism for pumping OH masers A comment on a mechanism for pumping OH masers

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....77..361h&link_type=abstract

Astronomy and Astrophysics, vol. 77, no. 3, Aug. 1979, p. 361, 362.

Astronomy and Astrophysics

Astrophysics

4

Collision Parameters, Hydroxyl Emission, Interstellar Masers, Optical Pumping, Astronomical Models, Heating, Ionic Collisions, Molecular Collisions, Population Inversion

Scientific paper

Johnston (1967) and Elitzur (1979) have suggested that ambipolar diffusion leads to an anisotropy in the collisions between ions and OH in OH maser regions and results in the population inversion required for the masing phenomena to occur. It is shown here that the frictional forces between ions and neutrals heat the maser regions to high temperatures in this model, and the OH is removed to form H2O on a timescale of months.

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