Stark broadening of neutral helium lines and spectroscopic diagnostics of pulsed helium plasma

摘要

Stark broadening parameters (widths and shifts) of two He I isolated spectral lines are measured in a plasma of a low-pressure pulsed arc. Plasma electron densities, determined by spectroscopic method based on previously calibrated He I lines, ranges from 1 * 10~(16) cm~(-3) to 6 * 10~(16) cm~(-3). The plasma electron temperature acquired by a Boltzmann plot of several He I lines, lies in the interval 8 000-30 000 K. Results of this work are compared with theoretical predictions and with other experimental data.