Evidence for surface oxidation on Pyrex of NO into NO2 by adsorbed O atoms

被引：32

作者：

Guaitella, O. ^{[1
]}

Huebner, M. ^{[2
]}

Welzel, S. ^{[2
]}

Marinov, D. ^{[1
]}

Roepcke, J. ^{[2
]}

Rousseau, A. ^{[1
]}

机构：

[1] Ecole Polytech, CNRS, LPP, F-91128 Palaiseau, France

[2] INP Greifswald, D-17489 Greifswald, Germany

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2010年 / 19卷 / 04期

关键词：

RECOMBINATION; PLASMAS; SILICA;

D O I：

10.1088/0963-0252/19/4/045026

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 [等离子体物理]; 070301 [无机化学];

摘要：

The surface of a Pyrex discharge tube was treated by a capacitively coupled RF plasma at low pressure. In cases where the plasma contained oxygen, O atoms deposition on the tube surface could be confirmed via the time-dependent conversion of NO to NO2 in a post-plasma experiment. Inside the discharge tube, the evolution of the concentrations of NO and of NO2 was measured using quantum cascade laser absorption spectroscopy in the mid-infrared spectral range. The surface density of atomic oxygen was estimated to be about 2 x 10(14) cm(-2) based on NO oxidation in the closed reactor. The production rate of NO2 is in the range of 2 x 10(11) molecules cm(-3) s(-1).

引用

页数：5

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