Metastable atom and electron density diagnostic in the initial stage of a pulsed discharge in Ar and other rare gases by emission spectroscopy

Autor:	Steven Adams, E. A. Bogdanov, Vladimir Demidov, Anatoly Kudryavtsev, J. M. Williamson, Mark Koepke
Rok vydání:	2012
Předmět:	Physics Electron density Electric field Atom Plasma diagnostics Plasma Emission spectrum Electron Atomic physics Condensed Matter Physics Spectral line
Zdroj:	Physics of Plasmas. 19:023510
ISSN:	1089-7674 1070-664X
Popis:	Temporal measurements of the emission intensities of the Ar 419.8 and 420.1 nm spectral lines combined with Ar plasma modeling were used to examine the metastable atom and electron density behavior in the initial stage of a pulsed dc discharge. The emission intensity measurements of these spectral lines near the start of a pulsed dc discharge in Ar demonstrated a sharp growth of metastable atom and electron densities which was dependent on the applied reduced electric fields. For lower electric fields, the sharp growth of metastable atom density started earlier than the sharp electron density growth. The reverse situation was observed for larger electric fields. This presents the possibility for controlling plasma properties which may be useful for technological applications. Similar measurements with spectral lines of corresponding transitions in other rare gases are examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f722b1806b5059ac0595ab9b71cee75 https://doi.org/10.1063/1.3686142 Zobrazit plný text záznamu