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Enhanced transportation of energetic electrons in dual-frequency atmospheric microplasmas
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10.1063/1.4793728
/content/aip/journal/pop/20/2/10.1063/1.4793728
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/2/10.1063/1.4793728
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Time-averaged (a) electron density and (b) plasma potential for SF microplasmas and their equivalent DF microplasmas.

Image of FIG. 2.
FIG. 2.

Electron energy probability function (EEPF) (a) in the center of the discharge and (b) at the electrode, for SF microplasmas and their equivalent DF microplasmas. (c) The spatial profiles of the electron temperature.

Image of FIG. 3.
FIG. 3.

(a) Time-averaged EEDFs with driving frequency at the left-hand electrode. (b) The relative portion of energetic electrons striking the electrode for various frequencies.

Image of FIG. 4.
FIG. 4.

(a) Time-averaged and (c)–(f) time-resolved spatial profiles of the power density dissipated by the electrons for various frequencies. (c) 100 MHz, (d) 900 MHz + 13.56 MHz (f eff = 100 MHz), (e) 400 MHz, and (f) 900 MHz + 13.56 MHz (f eff = 400 MHz). (b) The ratio of electron-dissipated power density for SF microplasmas and their equivalent DF microplasmas.

Image of FIG. 5.
FIG. 5.

Spatio-temporal distribution of the sheath width at the ground electrode as a function of time within one LF (13.56 MHz) period for different effective frequencies: (a) 100 MHz and (b) 400 MHz.

Image of FIG. 6.
FIG. 6.

Time evolution of the normalized electron density in He atmospheric microplasmas for frequencies of (a) and (b) 100 MHz, (c) and (d)900 MHz + 13.56 MHz (f eff = 100 MHz), (e)and (f) 400 MHz, and (g) and (h) 900 MHz +13.56 MHz (f eff = 400 MHz). (a), (c), (e), and (g) Normalized density of electrons with energy ε > 20 eV. (b), (d), (f), and (h) Normalized density of electrons with energy 4 eV < ε < 20 eV. The white lines indicate the movement of the sheath edges in SF microplasmas.

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/content/aip/journal/pop/20/2/10.1063/1.4793728
2013-02-26
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhanced transportation of energetic electrons in dual-frequency atmospheric microplasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/2/10.1063/1.4793728
10.1063/1.4793728
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