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

O. Guaitella; M. Hübner; S. Welzel; D. Marinov; J. Röpcke; A. Rousseau

doi:10.1088/0963-0252/19/4/045026

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

O. Guaitella, M. Hübner, S. Welzel, D. Marinov, J. Röpcke, A. Rousseau

Plasma & Materials Processing

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

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 × 1014 cm-2 based on NO oxidation in the closed reactor. The production rate of NO2 is in the range of 2 × 1011 molecules cm-3 s-1.

Original language	English
Pages (from-to)	045026-1/5
Number of pages	5
Journal	Plasma Sources Science and Technology
Volume	19
Issue number	4
DOIs	https://doi.org/10.1088/0963-0252/19/4/045026
Publication status	Published - 2010

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title = "Evidence for surface oxidation on Pyrex of NO into NO2 by adsorbed O atoms",

abstract = "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 × 1014 cm-2 based on NO oxidation in the closed reactor. The production rate of NO2 is in the range of 2 × 1011 molecules cm-3 s-1.",

author = "O. Guaitella and M. H{\"u}bner and S. Welzel and D. Marinov and J. R{\"o}pcke and A. Rousseau",

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T1 - Evidence for surface oxidation on Pyrex of NO into NO2 by adsorbed O atoms

AU - Guaitella, O.

AU - Hübner, M.

AU - Welzel, S.

AU - Marinov, D.

AU - Röpcke, J.

AU - Rousseau, A.

PY - 2010

Y1 - 2010

N2 - 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 × 1014 cm-2 based on NO oxidation in the closed reactor. The production rate of NO2 is in the range of 2 × 1011 molecules cm-3 s-1.

AB - 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 × 1014 cm-2 based on NO oxidation in the closed reactor. The production rate of NO2 is in the range of 2 × 1011 molecules cm-3 s-1.

U2 - 10.1088/0963-0252/19/4/045026

DO - 10.1088/0963-0252/19/4/045026

M3 - Article

SN - 0963-0252

VL - 19

SP - 045026-1/5

JO - Plasma Sources Science and Technology

JF - Plasma Sources Science and Technology

IS - 4

ER -

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

Abstract

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