Retraction Notice: Interpretation of Stark broadening measurements on a spatially integrated plasma spectral line

Density measurements using coherence imaging spectroscopy based on Stark broadening.

A coherence imaging camera has been set up at Pilot-PSI. The system is to be used for imaging the plasma density through the Stark effect broadening of the H(γ) line. Local density values are then obtained by the Abel inversion of the measured interferometric fringe contrast. This report will present the instrument setup and proof-of-principle demonstration. The inverted spatial electron densit...

Stark Broadening of Neutral Helium 5016 Å Line

Plasma spectral line broadening is an important tool for plasma diagnostic in both laboratory and astrophysical field. The neutral helium lines are used e.g., in industrial applications and to determine the properties of stellar atmospheres of hot stars. In local thermal equilibrium, the spectral line profile is related to the dipole autocorrelation function which is related to the two-particle...

Retraction Notice - 2

Retraction Notice - 3

Hydrogen Stark Broadening Calculations With

The unified theory has been generalized for the case of upper and lower state interaction by introducing a more compact tetradic notation. The general result is then applied to the Stark broadening of h>drogen. The thermal average of the time development operator for upper and lower state interaction is presented. Except for the time ordering it contains the effect of finite interaction time be...