Experimentelle Untersuchungen zur Stark-Verbreiterung der Balmer-Linien Hα und Hβ / Experimental Investigation of the Stark Broadening of the Balmer Lines Hα and Hβ
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Media type:
E-Article
Title:
Experimentelle Untersuchungen zur Stark-Verbreiterung der Balmer-Linien Hα und Hβ / Experimental Investigation of the Stark Broadening of the Balmer Lines Hα and Hβ
Description:
<jats:p>The profiles of the Stark broadened Balmer lines H<jats:sub>α</jats:sub> and H<jats:sub>β</jats:sub> 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<jats:sup>4</jats:sup>≦T≦3.2·10<jats:sup>4 °</jats:sup>K for the plasma temperature and to 1·10<jats:sup>16</jats:sup>≦n<jats:sub>e</jats:sub>≦55·10<jats:sup>16</jats:sup> cm<jats:sup>−3</jats:sup> for the electron density in the H<jats:sub>β</jats:sub>-scale. The experimental profiles of the H<jats:sub>α</jats:sub>-line agree with generalized impact approximations if the condition: n<jats:sub>e</jats:sub>
<jats:sup>2/3</jats:sup>/T>2·10<jats:sup>7</jats:sup> cm<jats:sup>−2</jats:sup> grad<jats:sup>−1</jats:sup> is fulfilled. Disagreements between the H<jats:sub>α</jats:sub> and H<jats:sub>β</jats:sub> electron density scale can be removed applying an empirical correction-factor to the electron density obtained from the half-width of H<jats:sub>α</jats:sub>. </jats:p>