Free-free Gaunt factors.

W. J. Karzas

ResearchPublished 1957

A computation of the hydrogenic (unscreened coulomb) free-free gaunt factors for a wide range of initial energies and photon frequencies. In addition, an average over initial energies with the Maxwell-Boltzmann distribution is performed to give the temperature-averaged Gaunt factors for use in opacity calculations. These are presented as functions of Z*/kT and h[superscript v]/kT. The relation between these Gaunt factors and the rate of Bremsstrahlung energy production is given, as is the total energy emitted as a function of Z*/kT.

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Karzas, W. J., Free-free Gaunt factors. Santa Monica, CA: RAND Corporation, 1957. https://www.rand.org/pubs/research_memoranda/RM2010.html.
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