Statistics – Computation
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jqsrt..44..101k&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 44, issue 1, pp. 101-107
Statistics
Computation
4
Plasma: Line Broadening, Plasma: Radiative Transfer
Scientific paper
The authors present a brief overview of the collisional broadening of hydrogenic radiators in thermal plasmas. Their focus is on lines with unshifted central components, particularly the alpha lines (Δn = 1), for which ion motion effects can be very large. The calculations span a wide range of electron densities, temperatures, and radiator-ion perturber reduced masses μ. The computations were made using a numerical simulation approach. Numerical methods have proven nesessary to deal with the overlapping strong collisions of different ion perturbers. Most current analytical methods, such as the unified theory, are not valid when strong collisions overlap, as is often the case with ion perturbers. The authors are developing a generalization of the unified theory which endeavors to overcome this limitation.
Cooper Joshua
Greene Richard L.
Kelleher Daniel E.
Oza Dipak H.
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