Profile measurements of pressure broadened He II-lines

Details Profile measurements of pressure broadened He II-lines Profile measurements of pressure broadened He II-lines

Feb 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970zphy..232....1e&link_type=abstract

Zeitschrift für Physik, Volume 232, Issue 1, pp.1-10

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16

Scientific paper

Helium plasmas having temperatures of 15 23 eV and electron densities of 0.8 1.6×1017 cm-3 were reproducibly established in a 10 kJoule thetapinch experiment. Radial and axial homogeneity of the plasma parameters in the discharge column could be achieved very satisfactorily by superimposing an axial magnetic bias field antiparallel in direction to the main thetapinch field. This plasma was well suited for Stark profile measurements on the He II-lines (4,686, 3,203, 2,733, 2,511 Å) in the visible and near ultraviolet and on the He II-lines (1,215, 1,085, 1,025, 992 Å) in the vacuum-UV-region. The line profiles recorded are given in the usual S(α)-representation and their halfwidth-density dependence is tabulated. Comparison is made with line shapes from other authors where available.

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