Observation and quantification of OH radicals in the far downstream part of an atmospheric microwave plasma jet using cavity ringdown spectroscopy

被引：24

作者：

Wang, Chuji ^{[1
,2
]}

Srivastava, Nimisha ^{[1
,2
]}

Dibble, Theodore S. ^{[3
]}

机构：

[1] Mississippi State Univ, Dept Phys & Astron, Starkville, MS 39762 USA

[2] Mississippi State Univ, Inst Clean Energy Technol, Starkville, MS 39762 USA

[3] SUNY Coll Environm Sci & Forestry, Dept Chem, Syracuse, NY 13210 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 05期

基金：

美国国家科学基金会;

关键词：

free radicals; oxygen compounds; plasma jets; radiative lifetimes; CHEMISTRY;

D O I：

10.1063/1.3177314

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An atmospheric argon microwave plasma jet with a plasma column 8 mm long and 1-2 mm wide is studied. Existence of hydroxyl (OH) radicals down to 28 mm away from the plasma orifice is evidenced by UV cavity ringdown spectroscopy. The measured OH (v(')=0, J(')=3.5) number density at 28 mm is 7.2x10(12) molecule/cm(3). The plasma gas flow velocity, along with the known OH lifetimes, suggests that OH radicals observed in the downstream are not the OH radicals formed in the plasma column but were formed in the downstream.

引用

页数：3

共 16 条

[1] Measurements of OH radicals in a low-power atmospheric inductively coupled plasma by cavity ringdown spectroscopy
Wang, CJ
Mazzotti, FJ
Koirala, SP
Winstead, CB
Miller, GP
APPLIED SPECTROSCOPY, 2004, 58 (06) : 734 - 740
[2] A study of OH radicals in an atmospheric AC discharge plasma using near infrared diode laser cavity ringdown spectroscopy combined with optical emission spectroscopy
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The European Physical Journal D, 2009, 54 : 77 - 86
[3] A study of OH radicals in an atmospheric AC discharge plasma using near infrared diode laser cavity ringdown spectroscopy combined with optical emission spectroscopy
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EUROPEAN PHYSICAL JOURNAL D, 2009, 54 (01): : 77 - 86
[4] Determination of OH Radicals in an Atmospheric Pressure Helium Microwave Plasma Jet
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IEEE TRANSACTIONS ON PLASMA SCIENCE, 2011, 39 (03) : 918 - 924
[5] Simultaneous measurements of OH(A) and OH(X) radicals in microwave plasma jet-assisted combustion of methane/air mixtures around the lean-burn limit using optical emission spectroscopy and cavity ringdown spectroscopy
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JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2013, 46 (46)
[6] Characterization of oh radicals in microwave plasma with cavity ring down spectroscopy
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[7] Measurements of atmospheric peroxy radicals using chemical amplification-cavity ringdown spectroscopy
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[8] Measurement of argon excimers, Ar2 *, in a cold atmospheric plasma jet using cavity ringdown spectroscopy
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APPLIED PHYSICS LETTERS, 2023, 123 (18)
[9] Measurement of OH(X) in the Microwave Plasma-Assisted Ignition of Methane/Air Mixture by Cavity Ringdown Spectroscopy
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[10] Study of spatial distribution of SiH3 radicals in very high frequency plasma using cavity ringdown spectroscopy
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