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Lokale Diagnostik einer Argon‐Niederdruckentladung mit Hilfe der resonanten Laserstreuung
Author(s) -
Bergmann J.,
Schubert M.
Publication year - 1984
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19840240104
Subject(s) - argon , atomic physics , ion , torr , radiative transfer , excited state , plasma , laser , chemistry , materials science , optics , physics , organic chemistry , quantum mechanics , thermodynamics
We report on the experimental investigations on a laser‐like low pressure argon gas discharge. The discharge parameters varied in the range from 0,05 to 1 Torr for the gas pressure and from 10 to 30 A for the discharge current. Local electron densities and temperatures have been measured with an adjustable spherical probe. Spatially resolved measurements of the temperatures and drift velocities of the Ar + ‐ions in the radial and axial direction of the positive column have been carried out by the resonant laser light scattering (fluorescence technique). The radial density profiles of the excited Ar + ‐ions have been determined in two different ways and have been compared with the calculations based on a simple collisional radiative model.