Measurement of Stark parameters of HeII P\alpha, P\beta and P\gamma spectral lines
Departamento de Optica y Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
Corresponding author: Dr. J. A. Aparicio, email@example.com
Accepted: 7 July 2003
This work reports information on the pressure broadened profiles of the HeII Pα, Pβ and P spectral lines measured in a pulsed discharge lamp. Information relative to the line shapes, full width at 1/2, 1/4 and 1/8 of the maximum intensity and the dip of the HeII 320.3 nm is provided. The electron density has been determined by two-wavelength interferometry and from the Stark width of the HeI 501.6 nm. and ranges during the HeII emission from 0.54 to m-3 in the plasma. Temperature (1.7–2.4 eV) has been simultaneously determined from the Boltzmann-plot of HeI and from local thermodynamic equilibrium (LTE) assumptions. The final results have been compared with most of the previous existing data.
Key words: atomic data / line: profiles / plasmas / methods: laboratory
© ESO, 2003