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On the Polarization of the 18 cm OH Emission

Published online by Cambridge University Press:  25 April 2016

A. G. Bromley*
Affiliation:
School of Physics, University of Sydney

Extract

The origin of the high degree of linear or circular polarization frequently observed in the 18 cm radiation of hydroxyl molecules has proved to be a formidable theoretical problem for which no adequate solution appears to exist at present. It is usually supposed that the radiation arises from some form of maser action and so it is possible that the polarization may arise from an interaction of radiation with the various frequencies and polarizations, through the coupling agency of the populations of the energy levels of the molecule.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1970

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References

1 See, for example, Schiff, L. I., ‘Quantum Mechanics’, 3rd edn, McGraw-Hill Co., Inc., New York 1968, p. 401.Google Scholar
2 Lamb, W. E., jun. and Sanders, T. M., jun., Phys. Rev., 119, 1901 (1960).Google Scholar
3 Heer, C. V. and Graft, R. D., Phys. Rev., 140, A1088 (1965).CrossRefGoogle Scholar
4 Bender, P. L., Phys. Rev. Letters, 18, 562 (1967).CrossRefGoogle Scholar