Simultaneous plasma and electric field diagnostics of microdischarge from hydrogen Balmer line shape

Spasojevic, Dj.; Cvejic, M.; Sˇisˇovic, N. M.; Konjevic, N.
June 2010
Applied Physics Letters;6/14/2010, Vol. 96 Issue 24, p241501
Academic Journal
Hydrogen Balmer beta line shape from a microhollow gas discharge in argon with traces of hydrogen is used for simultaneous diagnostics of plasma and cathode sheath parameters. Simple model of relevant processes responsible for line broadening is developed and results favorably compared with experiment at 500 mbar with the electron density 3.8×1020 m-3 and electric field strength of 127 kV/cm in the cathode sheath region.


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