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The profiles of the Stark broadened Balmer lines H α  and H β  have been measured in a wide range of temperature and electron density. By the use of different light sources (3 wallstabilized arcs of different design, a pulsed discharge tube and a plexiglass-capillary discharge) the range was ex- tended to 1.0·10 4 ≦T≦3.2·10 4 ° K for the plasma temperature and to 1·10 16 ≦n e ≦55·10 16  cm −3  for the electron density in the H β -scale. The experimental profiles of the H α -line agree with generalized impact approximations if the condition: n e  2/3 /T&gt;2·10 7  cm −2  grad −1  is fulfilled. Disagreements between the H α  and H β  electron density scale can be removed applying an empirical correction-factor to the electron density obtained from the half-width of H α .

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Experimentelle Untersuchungen zur Stark-Verbreiterung der Balmer-Linien H α  und H β  / Experimental Investigation of the Stark Broadening of the Balmer Lines H α  and H β