Non-Equilibrium Radiation Transport

  • D. H. Holland


To calculate the radiative properties of a gas it is necessary that the occupation numbers of the various atomic states of the gas particles be known. If the gas is in LTE, the occupation numbers can be expressed in terms of the local temperature and atomic parameters by using standard statistical mechanics. The only parameters required are the energies and statistical weights of the atomic states. When LTE conditions do not prevail, determination of the occupation numbers becomes much more complicated. In general, the occupation numbers depend on the state of the radiation field, so the equations governing the atomic configuration of the gas and the transport of radiation must be solved simultaneously.


Transport Equation Collision Frequency Occupation Number Scattered Photon Radiation Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Chandrasekhar, S., p. 321 et seq., Radiative Transfer, Dover, 1960.Google Scholar
  2. Cuperman, S., F. Engelmann, and J. Oxenius, Phys. Fluids 6, 108, 1963ADSMATHCrossRefGoogle Scholar
  3. Cuperman, S., F. Engelmann, and J. Oxenius, Phys. Fluids 7, 428, 1964.ADSMATHCrossRefGoogle Scholar
  4. Heitler, W.,, The Quantum Theory of Radiation, Oxford, 1944.Google Scholar
  5. Heitler, W., Z. Physik 82, 146, 1933.CrossRefGoogle Scholar
  6. Hummer, D.G., Monthly Notice Roy. Astron. Soc. 125, 21, 1962.ADSGoogle Scholar
  7. Smithsonian Astrophysical Observatory Special Report Number 174, Proceedings of the Second Harvard-Smithsonian Conference on Stellar Atmospheres, 1965.Google Scholar
  8. Milne, E.A., Handbuch der Astrophysik Vol. 3, Ch. 2, Springer, Berlin, 1930.Google Scholar
  9. Thomas, R.N., Non-Equilibrium Thermodynamics in the Presence of a Radiation Field, University of Colorado Press, 1965.Google Scholar
  10. Thomas, R.N. and R.G. Athay, Physics of the Solar Chromosphere, Interscience, 1961.Google Scholar
  11. Weisskopf, V., Ann. d. Phys. 9, 23, 1931.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1969

Authors and Affiliations

  • D. H. Holland

There are no affiliations available

Personalised recommendations