Non-invasive probe diagnostic method for electron temperature and ion current density in atmospheric pressure plasma jet source

Autor:	Yu-Sin Kim, Guangsup Cho, Yunjung Kim, Jun-Hyeon Moon, Young-Cheol Kim, Chin-Wook Chung, Hyo-Chang Lee
Rok vydání:	2015
Předmět:	Physics Atmospheric pressure Physics::Plasma Physics Plasma parameters Physics::Space Physics Electron temperature Plasma diagnostics Ion current Atmospheric-pressure plasma Plasma Atomic physics Condensed Matter Physics Current density
Zdroj:	Physics of Plasmas. 22:083511
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.4928440
Popis:	The electrical probe diagnostics are very hard to be applied to atmospheric plasmas due to severe perturbation by the electrical probes. To overcome this, the probe for measuring electron temperature and ion current density is indirectly contacted with an atmospheric jet source. The plasma parameters are obtained by using floating harmonic analysis. The probe is mounted on the quartz tube that surrounds plasma. When a sinusoidal voltage is applied to a probe contacting on a quartz tube, the electrons near the sheath at dielectric tube are collected and the probe current has harmonic components due to probe sheath nonlinearity. From the relation of the harmonic currents and amplitude of the sheath voltage, the electron temperature near the wall can be obtained with collisional sheath model. The electron temperatures and ion current densities measured at the discharge region are in the ranges of 2.7–3.4 eV and 1.7–5.2 mA/cm2 at various flow rates and input powers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6586783b07a8b8b9740ee39db5eb5a92 https://doi.org/10.1063/1.4928440 Zobrazit plný text záznamu