Degenerate four wave mixing of C2 in forward geometry: Spectral lineshape analysis and temperature determination

Jung Jin Ju; Jae Seok Ryu; Chul Woung Park; Jae Won Hahn

doi:10.1143/jjap.40.841

Degenerate four wave mixing of C₂ in forward geometry: Spectral lineshape analysis and temperature determination

Jung Jin Ju, Jae Seok Ryu, Chul Woung Park, Jae Won Hahn

Department of Mechanical Engineering

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

4 Citations (Scopus)

Abstract

Forward phase-matched degenerate four-wave mixing (DFWM) spectrum of C₂ molecules is studied to determine the temperature of a premixed oxyacetylene flame. Both theoretical calculation and experimental measurement of the d³Π_g ↔ d₃Π_u swan band of C₂ are performed at weak field intensity. The measured spectra excited with a narrow band optical parametric oscillator (OPO) showed good matches with the results of calculations. When a DFWM spectrum corresponding to the molecular transitions of both high (J = 36-42) and low (J = 8-15) rotational levels is used for a Boltzmann plot, we can determine the flame temperature of 3143 K with a very small temperature uncertainty of 1.6%. In addition, the uncertainty in temperature measurement caused by the line interference of the DFWM spectrum in the forward geometry is estimated to be only 0.5%, which is negligible for practical applications.

Original language	English
Pages (from-to)	841-846
Number of pages	6
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	40
Issue number	2 A
DOIs	https://doi.org/10.1143/jjap.40.841
Publication status	Published - 2001 Feb

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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title = "Degenerate four wave mixing of C2 in forward geometry: Spectral lineshape analysis and temperature determination",

abstract = "Forward phase-matched degenerate four-wave mixing (DFWM) spectrum of C2 molecules is studied to determine the temperature of a premixed oxyacetylene flame. Both theoretical calculation and experimental measurement of the d3Πg ↔ d3Πu swan band of C2 are performed at weak field intensity. The measured spectra excited with a narrow band optical parametric oscillator (OPO) showed good matches with the results of calculations. When a DFWM spectrum corresponding to the molecular transitions of both high (J = 36-42) and low (J = 8-15) rotational levels is used for a Boltzmann plot, we can determine the flame temperature of 3143 K with a very small temperature uncertainty of 1.6%. In addition, the uncertainty in temperature measurement caused by the line interference of the DFWM spectrum in the forward geometry is estimated to be only 0.5%, which is negligible for practical applications.",

author = "Ju, {Jung Jin} and Ryu, {Jae Seok} and Park, {Chul Woung} and Hahn, {Jae Won}",

year = "2001",

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language = "English",

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pages = "841--846",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

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}

Degenerate four wave mixing of C₂ in forward geometry : Spectral lineshape analysis and temperature determination. / Ju, Jung Jin; Ryu, Jae Seok; Park, Chul Woung; Hahn, Jae Won.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 40, No. 2 A, 02.2001, p. 841-846.

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

TY - JOUR

T1 - Degenerate four wave mixing of C2 in forward geometry

T2 - Spectral lineshape analysis and temperature determination

AU - Ju, Jung Jin

AU - Ryu, Jae Seok

AU - Park, Chul Woung

AU - Hahn, Jae Won

PY - 2001/2

Y1 - 2001/2

N2 - Forward phase-matched degenerate four-wave mixing (DFWM) spectrum of C2 molecules is studied to determine the temperature of a premixed oxyacetylene flame. Both theoretical calculation and experimental measurement of the d3Πg ↔ d3Πu swan band of C2 are performed at weak field intensity. The measured spectra excited with a narrow band optical parametric oscillator (OPO) showed good matches with the results of calculations. When a DFWM spectrum corresponding to the molecular transitions of both high (J = 36-42) and low (J = 8-15) rotational levels is used for a Boltzmann plot, we can determine the flame temperature of 3143 K with a very small temperature uncertainty of 1.6%. In addition, the uncertainty in temperature measurement caused by the line interference of the DFWM spectrum in the forward geometry is estimated to be only 0.5%, which is negligible for practical applications.

AB - Forward phase-matched degenerate four-wave mixing (DFWM) spectrum of C2 molecules is studied to determine the temperature of a premixed oxyacetylene flame. Both theoretical calculation and experimental measurement of the d3Πg ↔ d3Πu swan band of C2 are performed at weak field intensity. The measured spectra excited with a narrow band optical parametric oscillator (OPO) showed good matches with the results of calculations. When a DFWM spectrum corresponding to the molecular transitions of both high (J = 36-42) and low (J = 8-15) rotational levels is used for a Boltzmann plot, we can determine the flame temperature of 3143 K with a very small temperature uncertainty of 1.6%. In addition, the uncertainty in temperature measurement caused by the line interference of the DFWM spectrum in the forward geometry is estimated to be only 0.5%, which is negligible for practical applications.

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