CALIBRATION OF THE STARK-BROADENING PARAMETERS OF THE 728.1-NM HE-I LINE

Stark-broadening parameters (width and shift) of the 728.1-nm helium neutral line (2p1P0-3s1S) have been measured in a pulsed arc plasma. The measured line is well isolated and with enough intensity to be considered a very convenient calibration line. Electron density, which was obtained by the interferometry of two wavelengths, ranges from 1.50×1022 m-3 to 1.45×1023 m-3. The temperature, acquired by a Boltzmann plot of several He i lines, lies in the interval 16000-25000 K. The results of this work are compared with the experimental and theoretical available data. Afterwards, all of them are used to calibrate the line broadening parameters. © 1995 The American Physical Society.