Plasma conductivity as a probe for ambient air admixture in an atmospheric pressure plasma jet

F.J.J. Peeters, R.F. Rumphorst, M.C.M. van de Sanden

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

By utilizing a fully floating double electrical probe system, the conductivity of a linear atmospheric pressure plasma jet, utilizing nitrogen as process gas, was measured. The floating probe makes it possible to measure currents in the nanoamp range, in an environment where capacitive coupling of the probes to the powered electrodes is on the order of several kilovolts. Using a chemical kinetic model, the production of reactive nitrogen oxide and hydrogen-containing species through admixture of ambient humid air is determined and compared to the measured gas conductivity. The chemical kinetic model predicts an enhanced diffusion coefficient for admixture of O2 and H2O from ambient air of 2.7 cm2 s−1, compared to a literature value of 0.21 cm2 s−1, which is attributed to rapid mixing between the plasma jets and the surrounding air. The dominant charge carriers contributing to the conductivity, aside from electrons, are NO+, NO2 and NO3 . Upon admixture of O2 and H2O, the dominant neutral products formed in the N2 plasma jet are O, NO and N2O, while O2(1Δg) singlet oxygen is the only dominant excited species.

Original languageEnglish
Pages (from-to)63-74
Number of pages12
JournalPlasma Chemistry and Plasma Processing
Volume38
Issue number1
DOIs
Publication statusPublished - Jan 2018

Fingerprint

plasma conductivity
Plasma jets
admixtures
plasma jets
Atmospheric pressure
atmospheric pressure
Plasmas
Reaction kinetics
conductivity
floating
probes
air
reaction kinetics
Air
Gases
Singlet Oxygen
nitrogen oxides
Nitrogen oxides
Charge carriers
gases

Keywords

  • Chemical kinetic model
  • Double probe
  • Plasma jet

Cite this

@article{64c21b517c71488d97eca14e18660156,
title = "Plasma conductivity as a probe for ambient air admixture in an atmospheric pressure plasma jet",
abstract = "By utilizing a fully floating double electrical probe system, the conductivity of a linear atmospheric pressure plasma jet, utilizing nitrogen as process gas, was measured. The floating probe makes it possible to measure currents in the nanoamp range, in an environment where capacitive coupling of the probes to the powered electrodes is on the order of several kilovolts. Using a chemical kinetic model, the production of reactive nitrogen oxide and hydrogen-containing species through admixture of ambient humid air is determined and compared to the measured gas conductivity. The chemical kinetic model predicts an enhanced diffusion coefficient for admixture of O2 and H2O from ambient air of 2.7 cm2 s−1, compared to a literature value of 0.21 cm2 s−1, which is attributed to rapid mixing between the plasma jets and the surrounding air. The dominant charge carriers contributing to the conductivity, aside from electrons, are NO+, NO2 − and NO3 −. Upon admixture of O2 and H2O, the dominant neutral products formed in the N2 plasma jet are O, NO and N2O, while O2(1Δg) singlet oxygen is the only dominant excited species.",
keywords = "Chemical kinetic model, Double probe, Plasma jet",
author = "F.J.J. Peeters and R.F. Rumphorst and {van de Sanden}, M.C.M.",
year = "2018",
month = "1",
doi = "10.1007/s11090-017-9865-z",
language = "English",
volume = "38",
pages = "63--74",
journal = "Plasma Chemistry and Plasma Processing",
issn = "0272-4324",
publisher = "Springer",
number = "1",

}

Plasma conductivity as a probe for ambient air admixture in an atmospheric pressure plasma jet. / Peeters, F.J.J.; Rumphorst, R.F.; van de Sanden, M.C.M.

In: Plasma Chemistry and Plasma Processing, Vol. 38, No. 1, 01.2018, p. 63-74.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Plasma conductivity as a probe for ambient air admixture in an atmospheric pressure plasma jet

AU - Peeters, F.J.J.

AU - Rumphorst, R.F.

AU - van de Sanden, M.C.M.

PY - 2018/1

Y1 - 2018/1

N2 - By utilizing a fully floating double electrical probe system, the conductivity of a linear atmospheric pressure plasma jet, utilizing nitrogen as process gas, was measured. The floating probe makes it possible to measure currents in the nanoamp range, in an environment where capacitive coupling of the probes to the powered electrodes is on the order of several kilovolts. Using a chemical kinetic model, the production of reactive nitrogen oxide and hydrogen-containing species through admixture of ambient humid air is determined and compared to the measured gas conductivity. The chemical kinetic model predicts an enhanced diffusion coefficient for admixture of O2 and H2O from ambient air of 2.7 cm2 s−1, compared to a literature value of 0.21 cm2 s−1, which is attributed to rapid mixing between the plasma jets and the surrounding air. The dominant charge carriers contributing to the conductivity, aside from electrons, are NO+, NO2 − and NO3 −. Upon admixture of O2 and H2O, the dominant neutral products formed in the N2 plasma jet are O, NO and N2O, while O2(1Δg) singlet oxygen is the only dominant excited species.

AB - By utilizing a fully floating double electrical probe system, the conductivity of a linear atmospheric pressure plasma jet, utilizing nitrogen as process gas, was measured. The floating probe makes it possible to measure currents in the nanoamp range, in an environment where capacitive coupling of the probes to the powered electrodes is on the order of several kilovolts. Using a chemical kinetic model, the production of reactive nitrogen oxide and hydrogen-containing species through admixture of ambient humid air is determined and compared to the measured gas conductivity. The chemical kinetic model predicts an enhanced diffusion coefficient for admixture of O2 and H2O from ambient air of 2.7 cm2 s−1, compared to a literature value of 0.21 cm2 s−1, which is attributed to rapid mixing between the plasma jets and the surrounding air. The dominant charge carriers contributing to the conductivity, aside from electrons, are NO+, NO2 − and NO3 −. Upon admixture of O2 and H2O, the dominant neutral products formed in the N2 plasma jet are O, NO and N2O, while O2(1Δg) singlet oxygen is the only dominant excited species.

KW - Chemical kinetic model

KW - Double probe

KW - Plasma jet

UR - http://www.scopus.com/inward/record.url?scp=85035321982&partnerID=8YFLogxK

U2 - 10.1007/s11090-017-9865-z

DO - 10.1007/s11090-017-9865-z

M3 - Article

AN - SCOPUS:85035321982

VL - 38

SP - 63

EP - 74

JO - Plasma Chemistry and Plasma Processing

JF - Plasma Chemistry and Plasma Processing

SN - 0272-4324

IS - 1

ER -