Diagnostic based modeling for determining absolute atomic oxygen densities in atmospheric pressure helium-oxygen plasmas

被引：58

作者：

Niemi, K. ^{[1
]}

Reuter, S. ^{[1
]}

Graham, L. M. ^{[1
]}

Waskoenig, J. ^{[1
]}

Gans, T. ^{[1
]}

机构：

[1] Queens Univ Belfast, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

OPTICAL-EMISSION SPECTROSCOPY; LASER-INDUCED FLUORESCENCE; ELECTRON-IMPACT; EXCITATION; NEEDLE; JET;

D O I：

10.1063/1.3242382

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Absolute atomic oxygen ground state densities in a radio-frequency driven atmospheric pressure plasma jet, operated in a helium-oxygen mixture, are determined using diagnostic based modeling. One-dimensional numerical simulations of the electron dynamics are combined with time integrated optical emission spectroscopy. The population dynamics of the upper O 3p (3)P (lambda = 844 nm) atomic oxygen state is governed by direct electron impact excitation, dissociative excitation, radiation losses, and collisional induced quenching. Absolute values for atomic oxygen densities are obtained through comparison with the upper Ar 2p(1) (lambda = 750.4 nm) state. Results for spatial profiles and power variations are presented and show excellent quantitative agreement with independent two-photon laser-induced fluorescence measurements. (C) 2009 American Institute of Physics. [doi:10.1063/1.3242382]

引用

页数：3

共 18 条

[1] Measurement of electron-impact excitation into the 3p54p levels of argon using Fourier-transform spectroscopy [J].

Chilton, JE ;

Boffard, JB ;

Schappe, RS ;

Lin, CC .

PHYSICAL REVIEW A, 1998, 57 (01) :267-277

[2] OPTICAL-EMISSION SPECTROSCOPY OF REACTIVE PLASMAS - A METHOD FOR CORRELATING EMISSION INTENSITIES TO REACTIVE PARTICLE DENSITY [J].

COBURN, JW ;

CHEN, M .

JOURNAL OF APPLIED PHYSICS, 1980, 51 (06) :3134-3136

[3] RF capillary jet - a tool for localized surface treatment [J].

Foest, R. ;

Kindel, E. ;

Lange, H. ;

Ohl, A. ;

Stieber, M. ;

Weltmann, K. -D. .

CONTRIBUTIONS TO PLASMA PHYSICS, 2007, 47 (1-2) :119-128

[4] Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models [J].

Hagelaar, GJM ;

Pitchford, LC .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2005, 14 (04) :722-733

[5] Electron kinetics in radio-frequency atmospheric-pressure microplasmas [J].

Iza, F. ;

Lee, J. K. ;

Kong, M. G. .

PHYSICAL REVIEW LETTERS, 2007, 99 (07)

[6] Absolute atomic oxygen density distributions in the effluent of a microscale atmospheric pressure plasma jet [J].

Knake, N. ;

Reuter, S. ;

Niemi, K. ;

Schulz-von der Gathen, V. ;

Winter, J. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (19)

[7] Absolute atomic oxygen density profiles in the discharge core of a microscale atmospheric pressure plasma jet [J].

Knake, Nikolas ;

Niemi, Kari ;

Reuter, Stephan ;

Schulz-von der Gathen, Volker ;

Winter, Joerg .

APPLIED PHYSICS LETTERS, 2008, 93 (13)

[8] UPDATED EXCITATION AND IONIZATION CROSS-SECTIONS FOR ELECTRON-IMPACT ON ATOMIC OXYGEN [J].

LAHER, RR ;

GILMORE, FR .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1990, 19 (01) :277-305

[9] Absolute atomic oxygen density measurements by two-photon absorption laser-induced fluorescence spectroscopy in an RF-excited atmospheric pressure plasma jet [J].

Niemi, K ;

Schulz-von der Gathen, V ;

Döbele, HF .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2005, 14 (02) :375-386

[10] Generation of atomic oxygen in the effluent of an atmospheric pressure plasma jet [J].

Reuter, S. ;

Niemi, K. ;

Schulz-von der Gathen, V. ;

Doebele, H. F. .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2009, 18 (01)

← 1 2 →