Calibration of the Stark-broadening parameters for some He i lines

Abstract

The Stark broadening of several He i lines has been measured in a pulsed arc plasma. The intensity ratio of the He i (4686 \AA{}) and the He i (6678 \AA{}) lines was used to estimate the electron temperature, while the electron density was independently determined from interferometry at five different wavelengths. The electron density of the plasma varies from (2.00--6.46)\ifmmode\times\else\texttimes\fi{}${10}^{16}$ ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}3}$ and the temperature from 19 000 to 43 000 K. The results of this work are compared with the available experimental data, and all of them are used to calibrate some He ii lines, which will be used as calibration lines in future work with more complex plasmas.