Experimental Stark broadening data of SI II and SI III lines

Details Experimental Stark broadening data of SI II and SI III lines Experimental Stark broadening data of SI II and SI III lines

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...116..255k&link_type=abstract

Astronomy and Astrophysics, vol. 116, no. 2, Dec. 1982, p. 255-259.

Astronomy and Astrophysics

Astrophysics

8

Plasma Spectra, Silicon, Spectral Line Width, Stark Effect, Electron Density Profiles, Electron Impact, H Beta Line, Hydrides, Plasma Temperature, Spectroscopy

Scientific paper

Line profiles of 11 Si II-lines and 6 Si III-lines have been determined from pulsed-discharge measurements in a silicon-hydride plasma. The line widths are dominantly due to electron impact; the electron density values were deduced from the profile of H-beta and varied in the range 0.5-2 x 10 to the 17th/cu cm at temperatures between 22.500 K and 25,000 K. The experimental line broadening parameters are compared with theoretical values obtained from the straight-line non-adiabatic approximation, from the semiempirical approach of Griem (1968), and with his hyperbolic trajectory calculations.

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