ELECTRIC FIELD DEVELOPMENT IN γ-MODE RF APGD IN HELIUM

被引：0

作者：

Navratil, Z. ^{[1
]}

Josepson, R. ^{[1
]}

Cvetanovic, N. ^{[2
]}

Obradovic, B. ^{[3
]}

Dvorak, P. ^{[1
]}

机构：

[1] Masaryk Univ, Fac Sci, Dept Phys Elect, Kotlarska 2, CS-61137 Brno, Czech Republic

[2] Univ Belgrade, Fac Transport & Traff Engn, Vojvode Stepe 305, Belgrade 11000, Serbia

[3] Univ Belgrade, Fac Phys, Studentski Trg 12, Belgrade 11001, Serbia

来源：

HAKONE XV: INTERNATIONAL SYMPOSIUM ON HIGH PRESSURE LOW TEMPERATURE PLASMA CHEMISTRY: WITH JOINT COST TD1208 WORKSHOP: NON-EQUILIBRIUM PLASMAS WITH LIQUIDS FOR WATER AND SURFACE TREATMENT | 2016年

关键词：

radiofrequency discharge; atmospheric pressure; helium; electric field; Stark effect; GLOW-DISCHARGES; PLASMA JETS;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electric field strength in helium gamma-mode RF (13.56 MHz) atmospheric pressure glow discharge was measured using Stark polarization spectroscopy. Time-correlated single photon counting was applied to record the temporal development of spectral profile of He I 492.2 nm line with a sub-nanosecond temporal resolution. Electric fields up to 32 kV/cm in the RF sheath, obtained from the fit of forbidden (2 P-1 -4 F-1) and allowed (2 P-1 - 4 D-1) helium lines, are in agreement with the spatially averaged value of 40 kV/cm estimated from homogeneous charge density RF sheath model. The observed rectangular shape of the electric field time development is attributed to increased sheath conductivity by strong electron avalanches occurring in the gamma-mode sheath at high current densities.

引用

页码：134 / 136

页数：3

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