Validation of gas temperature measurements by OES in an atmospheric air glow discharge with water electrode using Rayleigh scattering

T. Verreycken, A.F.H. Gessel, van, A. Pageau, P.J. Bruggeman

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Abstract

Rayleigh scattering is used to determine the gas temperature of an atmospheric pressure dc excited glow discharge in air with a water electrode. The obtained temperatures are compared with calculated rotational temperatures measured by optical emission spectroscopy of OH(A–X) and N2(C–B). At a current of 15 mA a deviation is found between Trot(OH) and the gas temperature obtained from Rayleigh scattering of about 1000 K. The gas temperatures obtained from Rayleigh scattering, N2(C) and OH(A) in the positive column are, respectively, 2600 ± 100 K, 2700 ± 150 K and 3600 ± 200 K. It is shown that the rotational temperature of N2(C) is a reliable measurement of the gas temperature while this is not the case for OH(A). The results are explained in the context of quenching processes of the excited states. Spatially resolved gas temperatures in both longitudinal and radial directions are presented. The observed strong temperature gradients near the electrodes are checked to be consistent with the power dissipation and the heat transfer in the discharge. The effect of the polarity of the water electrode and filamentation on the measured temperatures is discussed.
Original languageEnglish
Pages (from-to)024002-1/6
JournalPlasma Sources Science and Technology
Volume20
Issue number2
DOIs
Publication statusPublished - 2011

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Rayleigh scattering
gas temperature
glow discharges
temperature measurement
electrodes
air
water
temperature
optical emission spectroscopy
temperature gradients
atmospheric pressure
polarity
dissipation
heat transfer
quenching
deviation
excitation

Cite this

Verreycken, T. ; Gessel, van, A.F.H. ; Pageau, A. ; Bruggeman, P.J. / Validation of gas temperature measurements by OES in an atmospheric air glow discharge with water electrode using Rayleigh scattering. In: Plasma Sources Science and Technology. 2011 ; Vol. 20, No. 2. pp. 024002-1/6.
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abstract = "Rayleigh scattering is used to determine the gas temperature of an atmospheric pressure dc excited glow discharge in air with a water electrode. The obtained temperatures are compared with calculated rotational temperatures measured by optical emission spectroscopy of OH(A–X) and N2(C–B). At a current of 15 mA a deviation is found between Trot(OH) and the gas temperature obtained from Rayleigh scattering of about 1000 K. The gas temperatures obtained from Rayleigh scattering, N2(C) and OH(A) in the positive column are, respectively, 2600 ± 100 K, 2700 ± 150 K and 3600 ± 200 K. It is shown that the rotational temperature of N2(C) is a reliable measurement of the gas temperature while this is not the case for OH(A). The results are explained in the context of quenching processes of the excited states. Spatially resolved gas temperatures in both longitudinal and radial directions are presented. The observed strong temperature gradients near the electrodes are checked to be consistent with the power dissipation and the heat transfer in the discharge. The effect of the polarity of the water electrode and filamentation on the measured temperatures is discussed.",
author = "T. Verreycken and {Gessel, van}, A.F.H. and A. Pageau and P.J. Bruggeman",
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Validation of gas temperature measurements by OES in an atmospheric air glow discharge with water electrode using Rayleigh scattering. / Verreycken, T.; Gessel, van, A.F.H.; Pageau, A.; Bruggeman, P.J.

In: Plasma Sources Science and Technology, Vol. 20, No. 2, 2011, p. 024002-1/6.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Validation of gas temperature measurements by OES in an atmospheric air glow discharge with water electrode using Rayleigh scattering

AU - Verreycken, T.

AU - Gessel, van, A.F.H.

AU - Pageau, A.

AU - Bruggeman, P.J.

PY - 2011

Y1 - 2011

N2 - Rayleigh scattering is used to determine the gas temperature of an atmospheric pressure dc excited glow discharge in air with a water electrode. The obtained temperatures are compared with calculated rotational temperatures measured by optical emission spectroscopy of OH(A–X) and N2(C–B). At a current of 15 mA a deviation is found between Trot(OH) and the gas temperature obtained from Rayleigh scattering of about 1000 K. The gas temperatures obtained from Rayleigh scattering, N2(C) and OH(A) in the positive column are, respectively, 2600 ± 100 K, 2700 ± 150 K and 3600 ± 200 K. It is shown that the rotational temperature of N2(C) is a reliable measurement of the gas temperature while this is not the case for OH(A). The results are explained in the context of quenching processes of the excited states. Spatially resolved gas temperatures in both longitudinal and radial directions are presented. The observed strong temperature gradients near the electrodes are checked to be consistent with the power dissipation and the heat transfer in the discharge. The effect of the polarity of the water electrode and filamentation on the measured temperatures is discussed.

AB - Rayleigh scattering is used to determine the gas temperature of an atmospheric pressure dc excited glow discharge in air with a water electrode. The obtained temperatures are compared with calculated rotational temperatures measured by optical emission spectroscopy of OH(A–X) and N2(C–B). At a current of 15 mA a deviation is found between Trot(OH) and the gas temperature obtained from Rayleigh scattering of about 1000 K. The gas temperatures obtained from Rayleigh scattering, N2(C) and OH(A) in the positive column are, respectively, 2600 ± 100 K, 2700 ± 150 K and 3600 ± 200 K. It is shown that the rotational temperature of N2(C) is a reliable measurement of the gas temperature while this is not the case for OH(A). The results are explained in the context of quenching processes of the excited states. Spatially resolved gas temperatures in both longitudinal and radial directions are presented. The observed strong temperature gradients near the electrodes are checked to be consistent with the power dissipation and the heat transfer in the discharge. The effect of the polarity of the water electrode and filamentation on the measured temperatures is discussed.

U2 - 10.1088/0963-0252/20/2/024002

DO - 10.1088/0963-0252/20/2/024002

M3 - Article

VL - 20

SP - 024002-1/6

JO - Plasma Sources Science and Technology

JF - Plasma Sources Science and Technology

SN - 0963-0252

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