Stark broadening measurement of the line 2058.13 nm of neutral helium in a linear discharge

Details Stark broadening measurement of the line 2058.13 nm of neutral helium in a linear discharge Stark broadening measurement of the line 2058.13 nm of neutral helium in a linear discharge

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jqsrt..42...39g&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 42, July 1989, p. 39-43. Research supported b

Physics

3

Electron Density (Concentration), Electron Energy, Gas Discharges, Helium, Plasma Spectra, Spectral Line Width, Stark Effect, Hydrogen Plasma, Oscillator Strengths, Thermodynamic Equilibrium

Scientific paper

Stark broadening of the transitions 2(1)P to 2(1)S of neutral He at 2058.13 nm has been measured in a plasma produced with a linear discharge in a mixture of He with 0.5 percent H. During the time of observation, the electron density was about 9 x 10 to the 15th/cu cm, as determined by using the profile of the 447.1-nm transition of neutral He. At the times of interest, the electron temperature was about 2.2 eV. The effects of reabsorption, together with the instrumental, Stark, and Doppler broadening, are considered in the calculated profile. The final Stark HWHM obtained is 0.058 nm at an electron density of 10 to the 16th/cu cm, in agreement with theoretical estimates based on the isolated-line approximation.

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