Stark broadening parameters of the 381.96 nm He I line
Faculty of Physics, University of Belgrade, P.O.B. 368, 11001 Belgrade, Serbia
Corresponding author: a email@example.com
Published online: 4 May 2004
Stark width (W) and shift (d) of the neutral helium (He I) 381.96 nm spectral line in the high lying transition has been measured in the optically thin linear, low-pressure, pulsed arc discharge operated in the helium at 50 000 K electron temperature and m-3 electron density. These values are the first experimentally obtained W and d related to this line. Unfortunately, comparison with theoretical results is not possible due to the fact that only one existing theoretical calculations has been done at a 1019 m-3 electron density only. We have found negative line shift (toward the blue) that agree well with existing theoretical predictions.
PACS: 52.70.Kz – Optical (ultraviolet, visible, infrared) measurements / 32.70.Cs – Oscillator strengths, lifetimes, transition moments / 32.70.-n – Intensities and shapes of atomic spectral lines
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004