Stark Broadening of Hydrogen Lines in a Plasma

Stark-profile calculations for Lyman-series lines of one-electron ions in dense plasmas

“…For the J Stark effect to be linear rather than quadratic , ~w most be imich larger than the fine structure sprea of the upper states , i.e., (~~~-~~ (~) ( I -;) (6) and most be well exceeded for our calculations to be valid ,…”

“…(6) and (8) . -F A corresponding criterion for the electrons , obtained by using the electron plasma frequency, might suggest that the quaa i.tatic appro ximation is reasonably valid for them as well , in spite of en additional 6 factor 10 in the condition on the density .…”

“…used in Ref. 6. (The impact parameters p were of course assumed to be larger than the radial coordinate of the radiating electron.…”

Shock Development in an Electrothermal Shock Tube

“…The electron density, however, may be determined by a method largely independent of equilibrium considerations, namely Stark broadening, using in particular the 4861 A line of hydrogen (Hf3) for which much theoretical and experimental work has already been done by Baranger (1959), Griem, Kolb, and Shen (1959), and Griem (1964). The agreement between experimentally and theoretically determined profiles for this particular line is better than ±3· 5 % (Hill and Gerardo 1967).…”

The Design and Characteristics of Highly Ionized Hydrogenous Laboratory Plasma Sources

“…Detailed calculations of the line shape have been made by Griem, Kolb, andShen (1959, 1962). The addition of electronic effects introduces a weak dependence on temperature to the line shapes; however, only a very rough knowledge of the temperature is required to allow the curves to be used for ion density measurements.…”