CH radical production from 248nm photolysis or discharge-jet dissociation of CHBr3 probed by cavity ring-down absorption spectroscopy

2006 ◽  
Vol 125 (11) ◽  
pp. 114312 ◽  
Author(s):  
C. Romanzin ◽  
S. Boyé-Péronne ◽  
D. Gauyacq ◽  
Y. Bénilan ◽  
M.-C. Gazeau ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Radical Production ◽  
Ch Radical ◽  
Cavity Ring Down

Probing BrCl from photodissociation of CH2BrCl and CHBr2Cl at 248 nm using cavity ring-down spectroscopy

2021 ◽  
Vol 23 (10) ◽  
pp. 6098-6106
Author(s):  
Balaganesh Muthiah ◽  
Toshio Kasai ◽  
King-Chuen Lin
Keyword(s):  
Absorption Spectroscopy ◽  
Cavity Ring Down Spectroscopy ◽  
Cavity Ringdown ◽  
Cavity Ring Down

Investigation of molecular halogens as a primary product from the photodissociation of CH2BrCl and CHBr2Cl at 248 nm using cavity ringdown absorption spectroscopy (CRDS).

scholarly journals Detection of OH in an atmospheric flame at 1.5 um using optical frequency comb spectroscopy

2016 ◽  
Vol 8 (4) ◽  
pp. 110 ◽  
Author(s):  
Lucile Rutkowski ◽  
Alexandra C. Johansson ◽  
Damir Valiev ◽  
Amir Khodabakhsh ◽  
Arkadiusz Tkacz ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Near Infrared ◽  
Frequency Comb ◽  
Chem Phys ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Enhanced Absorption ◽  
Laser Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
Cavity Ring Down

We report broadband detection of OH in a premixed CH4/air flat flame at atmospheric pressure using cavity-enhanced absorption spectroscopy based on an Er:fiber femtosecond laserand a Fourier transform spectrometer.By taking ratios of spectra measured at different heights above the burner we separate twenty OH transitions from the largely overlapping water background. Weretrieve from fits to the OH lines the relative variation of the OH concentration and flame temperature with height above the burner and compare them with 1-D simulations of the flamestructure. Full Text: PDF ReferencesG. Meijer, M. G. Boogaarts, R. T. Jongma, D. H. Parker and A. M. Wodtke, "Coherent cavity ring down spectroscopy", Chem. Phys. Lett. 217, 1, 112 (1994). CrossRef S. Cheskis, I. Derzy, V. A. Lozovsky, A. Kachanov and D. Romanini, "Cavity ring-down spectroscopy of OH radicals in low pressure flame", Appl. Phys. B 66, 3, 377 (1998). CrossRef X. Mercier, E. Therssen, J. F. Pauwels and P. Desgroux, "Cavity ring-down measurements of OH radical in atmospheric premixed and diffusion flames.: A comparison with laser-induced fluorescence and direct laser absorption", Chem. Phys. Lett. 299, 1, 75 (1999). CrossRef J. Scherer, D. Voelkel and D. Rakestraw, "Infrared cavity ringdown laser absorption spectroscopy (IR-CRLAS) in low pressure flames", Appl. Phys. B 64, 6, 699 (1997). CrossRef R. Peeters, G. Berden and G. Meijer, "Near-infrared cavity enhanced absorption spectroscopy of hot water and OH in an oven and in flames", Appl. Phys. B 73, 1, 65 (2001). CrossRef T. Aizawa, "Diode-laser wavelength-modulation absorption spectroscopy for quantitative in situ measurements of temperature and OH radical concentration in combustion gases", Appl. Opt. 40, 27, 4894 (2001). CrossRef B. Löhden, S. Kuznetsova, K. Sengstock, V. M. Baev, et al., "Fiber laser intracavity absorption spectroscopy for in situ multicomponent gas analysis in the atmosphere and combustion environments", Appl. Phys. B 102, 2, 331 (2011). CrossRef A. Matynia, M. Idir, J. Molet, C. Roche, et al., "Absolute OH concentration profiles measurements in high pressure counterflow flames by coupling LIF, PLIF, and absorption techniques", Appl. Phys. B 108, 2, 393 (2012). CrossRef R. S. Watt, T. Laurila, C. F. Kaminski and J. Hult, "Cavity Enhanced Spectroscopy of High-Temperature H2O in the Near-Infrared Using a Supercontinuum Light Source", Appl. Spectrosc. 63, 12, 1389 (2009). CrossRef C. Abd Alrahman, A. Khodabakhsh, F. M. Schmidt, Z. Qu and A. Foltynowicz, "Cavity-enhanced optical frequency comb spectroscopy of high-temperature H2O in a flame", Opt. Express 22, 11, 13889 (2014). CrossRef A. Foltynowicz, P. Maslowski, A. J. Fleisher, B. J. Bjork and J. Ye, "Cavity-enhanced optical frequency comb spectroscopy in the mid-infrared application to trace detection of hydrogen peroxide", Appl. Phys. B 110, 2, 163 (2013). CrossRef Z. Qu, R. Ghorbani, D. Valiev and F. M. Schmidt, "Calibration-free scanned wavelength modulation spectroscopy ? application to H2O and temperature sensing in flames", Opt. Express 23, 12, 16492 (2015). CrossRef L. Rutkowski, A. Khodabakhsh, A. C. Johansson, D. M. Valiev, et al., "Measurement of H2O and OH in a Flame by Optical Frequency Comb Spectroscopy", CLEO: Science and Innovations SW4H.8 (2016). CrossRef L. S. Rothman, I. E. Gordon, Y. Babikov, A. Barbe, et al., "The HITRAN2012 molecular spectroscopic database", J. Quant. Spectrosc. Radiat. Transf. 130, 4 (2013). CrossRef

Cavity Ring-Down Absorption Spectroscopy: Optical Characterization of ICl Product in Photodissociation of CH2ICl at 248 nm

2018 ◽  
Vol 122 (42) ◽  
pp. 8344-8353
Author(s):  
Denís Paredes-Roibás ◽  
Muthiah Balaganesh ◽  
Toshio Kasai ◽  
José María Gavira-Vallejo ◽  
King Chuen Lin
Keyword(s):  
Absorption Spectroscopy ◽  
Optical Characterization ◽  
Spectroscopy Optical ◽  
Cavity Ring Down

D2←D0 transition of the anthracene cation observed by cavity ring-down absorption spectroscopy in a supersonic jet

2004 ◽  
Vol 386 (4-6) ◽  
pp. 259-264 ◽  
Author(s):  
O. Sukhorukov ◽  
A. Staicu ◽  
E. Diegel ◽  
G. Rouillé ◽  
Th. Henning ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Supersonic Jet ◽  
Cavity Ring Down

Fiber-Loop Cavity Ring-Down Absorption Spectroscopy

2014 ◽  
Author(s):  
Nicholas L. P. Andrews ◽  
Jessica Litman ◽  
Klaus Bescherer ◽  
Jack A. Barnes ◽  
Hans-Peter Loock
Keyword(s):  
Absorption Spectroscopy ◽  
Cavity Ring Down ◽  
Fiber Loop

Predissociation of CH B2Σ+v′=0,1 levels studied by cavity ring-down absorption spectroscopy

2001 ◽  
Vol 346 (3-4) ◽  
pp. 209-216 ◽  
Author(s):  
J Luque ◽  
J.B Jeffries ◽  
G.P Smith ◽  
D.R Crosley
Keyword(s):  
Absorption Spectroscopy ◽  
Cavity Ring Down

scholarly journals Detection of Formaldehyde in Flames Using UV and MIR Absorption Spectroscopy

2015 ◽  
Vol 229 (4) ◽  
Author(s):  
Patrick Nau ◽  
Julia Koppmann ◽  
Alexander Lackner ◽  
Andreas Brockhinke
Keyword(s):  
Comparative Study ◽  
Dimethyl Ether ◽  
Absorption Spectroscopy ◽  
Spectral Region ◽  
Low Pressure ◽  
Cavity Ring Down Spectroscopy ◽  
Mid Infrared ◽  
Highly Sensitive ◽  
Absorption Technique ◽  
Cavity Ring Down

AbstractAbsorption spectroscopy in the ultraviolet (UV) and mid-infrared (MIR) spectral region has been used in a comparative study for the detection of formaldehyde in laminar low pressure flames of dimethyl ether (DME) and methane. Both spectral regions were tested to explore respective advantages and limitations, especially for the detection of stable molecules in flames. In the UV, cavity ring-down spectroscopy (CRDS), a highly sensitive multi-pass absorption technique, has been used for the detection of formaldehyde in the

Cavity ring-down laser absorption spectroscopy of IrC

2004 ◽  
Vol 385 (3-4) ◽  
pp. 259-262 ◽  
Author(s):  
Tongmei Ma ◽  
J.W.-H Leung ◽  
A.S.-C Cheung
Keyword(s):  
Absorption Spectroscopy ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Cavity Ring Down
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