A numerical and experimental investigation of an axially symmetric RF plasma

被引：4

作者：

Sutton, Yvonne C. ^{[1
]}

Johnson, Peter C. ^{[1
]}

Naidis, George V. ^{[2
]}

Sharp, David ^{[1
]}

Braithwaite, Nicholas St J. ^{[1
]}

机构：

[1] Open Univ, Milton Keynes MK7 6AA, Bucks, England

[2] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 45期

关键词：

ATMOSPHERIC-PRESSURE AIR; DISCHARGES; GLOW;

D O I：

10.1088/0022-3727/45/45/455201

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The characteristics of an atmospheric pressure, RF discharge in air were determined and compared with a 2D numerical model adapted from that used for a dc glow discharge. For a 15mm discharge, the RF plasma's electrical and optical characteristics show a close correlation to several equivalent dc plasmas and to the results calculated from the adapted model. For an rms conduction current range of 11-30 mA, the rotational temperature varies between 2800 and 3200 K; the vibrational temperature shows a change of 3500-4000K with near equilibrium conditions to the rotational state occuring in the central region of the discharge. Spatial measurements and modelling of nitrogen emission spectra identify the changes in the temperatures and dimensions along the vertical z-axis as well as the spatial dependence on the atomic and molecular species generated in the discharge.

引用

页数：13

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