Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. III. Comparison of A–X excitation schemes

Wolfgang G. Bessler; Christof Schulz; Tonghun Lee; Jay B. Jeffries; Ronald K. Hanson

doi:10.1364/AO.42.004922

Applied Optics
Vol. 42,
Issue 24,
pp. 4922-4936
(2003)
•https://doi.org/10.1364/AO.42.004922

Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. III. Comparison of A–X excitation schemes

Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, and Ronald K. Hanson

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, and Ronald K. Hanson, "Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. III. Comparison of A–X excitation schemes," Appl. Opt. 42, 4922-4936 (2003)

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

Abstract

Laser-induced fluorescence (LIF) has proven a reliable technique for nitric oxide (NO) diagnostics in practical combustion systems. However, a wide variety of different excitation and detection strategies are proposed in the literature without giving clear guidelines of which strategies to use for a particular diagnostic situation. We give a brief review of the high-pressure NO LIF diagnostics literature and compare strategies for exciting selected transitions in the A–X(0, 0), (0, 1), and (0, 2) bands using a different detection bandpass. The strategies are compared in terms of NO LIF signal strength, attenuation of laser and signal light in the hot combustion gases, signal selectivity against LIF interference from O₂ and CO₂, and temperature and pressure sensitivity of the LIF signal. The discussion is based on spectroscopic measurements in laminar premixed methane-air flames at pressures between 1 and 60 bars and on NO and O₂ LIF spectral simulations.

Full Article | PDF Article

More Like This

Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. II. A–X(0,1) excitation

Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 42(12) 2031-2042 (2003)

Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames. I. A–Xexcitation

Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 41(18) 3547-3557 (2002)

Laser-induced-fluorescence detection of nitric oxide in high-pressure flames with A–X(0, 2) excitation

Christof Schulz, Volker Sick, Johannes Heinze, and Winfried Stricker
Appl. Opt. 36(15) 3227-3232 (1997)

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 (7)

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 (5)

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 (1)

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

A–X Band	Transition	Excitation Wavelength (nm)	Ground-State Energy ε/κ (K)
(0, 0)	P₁(23.5), Q₁ + P₂₁(14.5), Q₂ + R₁₂(20.5)	226.03	540–1381
(0, 1)	P₁(25.5), R₁ + Q₂₁(11.5), Q₁ + P₂₁(17.5)	235.87	3040–4305
(0, 2)	O₁₂(7.5–10.5) bandhead	247.94	5680–5820

NO A–X Band	(0, 0) Excitation (0, 1) + (0, 2) Detection	(0, 1) Excitation (0, 0) Detection	(0, 1) Excitation (0, 2) + (0, 3) Detection	(0, 2) Excitation (0, 0) + (0, 1) Detection	(0, 2) Excitation (0, 3) + (0, 4) Detection
	Excitation and Detection Strategy (nm)
1-bar excitation wavelength	226.031	235.870	235.870	247.941	247.941
Detection bandpass	232–252	217–232	243–263	220–240	255–275
	Relative Signal Strengths at 10 bar (60 bar)
Experimental, ϕ = 0.83	100 (100)	18 (17)	42 (39)	4.1 (3.4)	2.3 (1.9)
Simulated, T = 1900 K	100 (100)	15 (14)	28 (26)	3.1 (3.1)	1.3 (1.4)

NO A–X Band	(0, 0) Excitation (0, 1) + (0, 2) Detection	(0, 1) Excitation (0, 0) Detection	(0, 1) Excitation (0, 2) + (0, 3) Detection	(0, 2) Excitation (0, 0) + (0, 1) Detection	(0, 2) Excitation (0, 3) + (0, 4) Detection
Case 1: High-pressure burner, 40 bar, 1900 K
Laser transmission, l = 4 mm	82%	89%	89%	95%	95%
Signal transmission, l = 4 mm	92%	81%	95%	87%	98%
Total transmission	75%	73%	85%	82%	92%
Relative overall NO LIF signal	75	11	24	2.5	1.2
Case 2: Diesel engine, 50 bar, 2400 K
Laser transmission, l = 40 mm	0.48%	4.0%	4.0%	17%	17%
Signal transmission, l = 10 mm	53%	26%	67%	38%	80%
Total transmission	0.25%	1.0%	2.7%	6.4%	13%
Relative overall NO LIF signal	0.25	0.16	0.77	0.20	0.18

NO A–X Band	(0, 0) Excitation (0, 1) + (0, 2) Detection	(0, 1) Excitation (0, 0) Detection	(0, 1) Excitation (0, 2) + (0, 3) Detection	(0, 2) Excitation (0, 0) + (0, 1) Detection	(0, 2) Excitation (0, 3) + (0, 4) Detection
O₂/NO ratio, ϕ = 0.83	0.9 (17)	5.7 (22)	2.4 (23)	2.3 (44)	5.5 (96)
CO₂/NO ratio, ϕ = 0.83	0 (8.9)	0.4 (14)	0.6 (24)	4.6 (77)	24 (412)
NO/(NO + O₂ + CO₂), ϕ = 0.83	99 (80)	94 (73)	97 (68)	94 (45)	77 (16)
O₂/NO ratio, ϕ = 1.13	0 (0.6)	3.0 (1.3)	1.6 (0.9)	0 (1.3)	0 (1.5)
CO₂/NO ratio, ϕ = 1.13	0 (7.0)	0.2 (8.8)	0.4 (15)	3.3 (42)	17 (222)
NO/(NO + O₂ + CO₂), ϕ = 1.13	99 (93)	94 (91)	97 (86)	94 (70)	77 (31)

NO A–X Band	(0, 0) Excitation (0, 1) + (0, 2) Detection	(0, 1) Excitation; either (0, 0) or (0, 2) + (0, 3) Detection	(0, 2) Excitation; either (0, 0) + (0, 1) or (0, 3) + (0, 4) Detection
Temperature of maximum LIF signal, number density measurement	1645 K	2815 K	3770 K
Signal variation between 1700 and 2500 K, number density measurement	± 6.8%	± 18%	± 36%
Temperature of maximum LIF signal, mole fraction measurement	<1000 K	2055 K	2715 K
Signal variation between 1500 and 2500 K, mole fraction measurement	± 25%	± 3.1%	± 19%

Abstract

Cited By

Figures (7)

Tables (5)

Equations (1)

Applied Optics