Flame temperature measurements by radar resonance-enhanced multiphoton ionization of molecular oxygen

Yue Wu; Jordan Sawyer; Zhili Zhang; Steven F. Adams

doi:10.1364/AO.51.006864

Applied Optics
Vol. 51,
Issue 28,
pp. 6864-6869
(2012)
•https://doi.org/10.1364/AO.51.006864

Flame temperature measurements by radar resonance-enhanced multiphoton ionization of molecular oxygen

Yue Wu, Jordan Sawyer, Zhili Zhang, and Steven F. Adams

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Yue Wu, Jordan Sawyer, Zhili Zhang, and Steven F. Adams, "Flame temperature measurements by radar resonance-enhanced multiphoton ionization of molecular oxygen," Appl. Opt. 51, 6864-6869 (2012)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Abstract

Here we report nonintrusive local rotational temperature measurements of molecular oxygen, based on coherent microwave scattering (radar) from resonance-enhanced multiphoton ionization (REMPI) in room air and hydrogen/air flames. Analyses of the rotational line strengths of the two-photon molecular oxygen $C^{3} Π (v = 2) \leftarrow X^{3} Σ (v^{'} = 0)$ transition have been used to determine the hyperfine rotational state distribution of the ground $X^{3} Σ (v^{'} = 0)$ state. Rotationally resolved $2 + 1$ REMPI spectra of the molecular oxygen $C^{3} Π (v = 2) \leftarrow X^{3} Σ (v^{'} = 0)$ transition at different temperatures were obtained experimentally by radar REMPI. Rotational temperatures have been determined from the resulting Boltzmann plots. The measurements in general had an accuracy of $\sim \pm 60 K$ in the hydrogen/air flames at various equivalence ratios. Discussions about the decreased accuracy for the temperature measurement at elevated temperatures have been presented.

Full Article | PDF Article

More Like This

Two-dimensional quantitative measurements of methyl radicals in methane/air flame

Yue Wu and Zhili Zhang
Appl. Opt. 54(2) 157-162 (2015)

One-dimensional air temperature measurements by air resonance enhanced multiphoton Ionization thermometry (ART)

Walker McCord, Aleksander Clark, and Zhili Zhang
Opt. Express 30(11) 18539-18551 (2022)

Experiments concerning resonance-enhanced multiphoton ionization probe measurements of flame-species profiles

Asa Fein, Jeffrey S. Bernstein, Xiao-Mei Song, and Terrill A. Cool
Appl. Opt. 33(21) 4889-4898 (1994)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

${cm}^{- 1}$	$F_{1} (Ω = 0)$	$F_{2} (Ω = 1)$	$F_{3} (Ω = 2)$
$n_{o}$	69369(2)	69449(1)	69552(1)
$B_{eff}$	1.61(5)	1.65(1)	1.69(1)
$D_{v}$	$1.9 (5) \times 10^{- 5}$	$1.6 (2) \times 10^{- 5}$	$1.9 (2) \times 10^{- 5}$

Wavelength (nm)	$J^{'}$	$G_{1} ({cm}^{- 1})$	$T_{f, g}^{(2)}$
286.09	25	933.38	14.73
286.24	23	793.08	13.73
286.38	21	664.15	12.73
286.52	19	546.62	11.72
286.65	17	440.49	10.72
286.78	15	345.79	9.72
286.88	13	262.54	8.71
286.99	11	190.74	7.70
287.09	9	130.42	6.69
287.18	7	81.57	5.66
287.26	5	44.20	4.62
287.34	3	18.33	3.50

Branch	Wavelength (nm)	$J^{'}$	$G_{Ω + 1} ({cm}^{- 1})$	$T_{f, g}^{(2)}$
$R_{32}$	285.36	41	2462.02	10.456
$P_{31}$	285.37	48	3216.95	18.976
$O_{12}$	286.05	39	2231.73	14.970
$Q_{32}$	286.20	37	2012.57	18.740
$P_{32}$	286.34	27	1085.03	9.630
$O_{12}$	286.35	35	1804.59	17.740
$Q_{31}$	286.45	26	931.19	13.754
$P_{32}$	286.58	39	2231.73	20.5
$P_{21}$	286.60	32	1420.03	20.247
$Q_{12}$	286.62	29	1248.00	12.371

	Real (K)	Experimental (K)	Error	Percentage (%)
Pure oxygen	298	303	5	1.68
	523	553	30	5.74
	773	709	$- 64$	$- 8.28$
Room air	298	298	0	0.00
	473	496	23	4.86
	773	723	$- 50$	$- 6.47$
$H_{2} / air flame$	1281	1345	64	5.00
$H_{2} / air flame$	1658	1608	$- 50$	$- 3.02$

${cm}^{- 1}$	$F_{1} (Ω = 0)$	$F_{2} (Ω = 1)$	$F_{3} (Ω = 2)$
$n_{o}$	69369(2)	69449(1)	69552(1)
$B_{eff}$	1.61(5)	1.65(1)	1.69(1)
$D_{v}$	$1.9 (5) \times 10^{- 5}$	$1.6 (2) \times 10^{- 5}$	$1.9 (2) \times 10^{- 5}$

Abstract

Cited By

Figures (4)

Tables (4)

Equations (5)

Applied Optics