Voigt a-damping parameter of the spectral lines emitted by a plasma flame and a plasma column generated by a microwave at atmospheric pressure
Abstract
Atomic emission spectroscopy is a passive spectroscopy technique widely used in the diagnosis of plasmas which does not alter the internal kinectic of the discharge during the measurement process, under high pressure conditions. Line profiles are adequately fitted by a Voigt function. One of the parameter which characterizes these spectral lines is the \emph{damping} or \emph{Voigt-a parameter}. In this work a simple method for obtaining experimentally the value of the \emph{a parameter} of the spectral lines emitted by an argon plasma generated at atmospheric pressure is presented. The value indicates the proportion existing between the Lorentz and Doppler components of the total profile of the line.
- Publication:
-
Memorie della Societa Astronomica Italiana Supplementi
- Pub Date:
- 2005
- Bibcode:
- 2005MSAIS...7..230S
- Keywords:
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- Damping parameter-Microwave plasmas-Atmospheric pressure-Spectral line broadening-Atomic emission spectroscopy