Hydroxyl Radical (OH) - LIF:

Transition: A2S+ - X2P (2,0) and (3,1) bands of OH

Appearance of the OH A-X system: Degraded to the red

Excitation wavelength: 278,5 to 259,0 nm

Flame/Burner: acetylene/oxygen (C2H2/O2) flame of a welding torch

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Grating: 100 lines/mm, only UV excitation, Emissions: 220 to 640 nm, part 1

EES, point of measurement:

   off-center (outer range of the flame)

Excitation wavelength:

   UV:  278,50 nm to 274,00 nm

   VIS: no VIS excitation

Emission wavelength:

   220 nm to 640 nm

EES, point of measurement:

    center  (inner cone of the flame)

Excitation wavelength:

   UV:  278,50 nm to 274,00 nm

   VIS: no VIS excitation

Emission wavelength:

   220 nm to 640 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 274,35 nm

   VIS: no VIS excitation

  

Detected signals:

   Rayleigh scattering: UV (+ 2nd order)

   OH-LIF A-X / from A-X (2,0) excitation:

(starting at: 259,2 nm (2,0))

   OH-LIF A-X emissions:

(278 - 302 nm, 302 - 335 nm)

Detected signals:

   Rayleigh scattering: UV

   C2-LIF / Swan band emissions:

      (438 nm, 473 nm, 516 nm, 563 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (360 nm, 385 nm, 410nm, 438 nm)

   broadband fluorescence of hydrocarbon species:

      (about 300 nm to 450 nm)

Download common measurement report for detailed informations about flame, laser beam position, pulse energy, ICCD gain, etc: 

Download MS Word file:

Download Davis file:

Download ASCII file:

Download Davis file:

Download ASCII file:

CCD dynamic: 12 bit / ICCD gain: 8,5 / entrance slit: 80 mm / sum of pulses: 20 /

UV pulse energy: not measured

   

Grating: 100 lines/mm, only UV excitation, Emissions: 190 to 605 nm, part 2

EES, point of measurement:

   off-center (outer range of the flame)

Excitation wavelength:

   UV:  274,50 nm to 258,00 nm

   VIS: no VIS excitation

Emission wavelength:

   190 nm to 605 nm

EES, point of measurement:

    center  (inner cone of the flame)

Excitation wavelength:

   UV: 274,50 nm to 258,00 nm

   VIS:  no VIS excitation

Emission wavelength:

    190 nm to 605 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 262,26 nm

   VIS: no VIS excitation

  

Detected signals:

   Rayleigh scattering: UV

   OH-LIF A-X / from A-X (2,0) and (3,1) excitations:

(starting at: 259,2 nm (2,0) and 267,5 nm (3,1))

   OH-LIF A-X emissions:

(259 - 275 nm, 278 - 302 nm, 302 - 335 nm, 340 - 360 nm, 405 nm)

   NO-LIF A-X / from A-X (0,3) excitation:

(starting at 259,5 nm (0,3))

   NO-LIF A-X emissions from (0,3):

(301 nm, 286 nm, 272 nm, 260 nm, 248 nm, 237 nm, 227 nm)

   NO-LIF A-X / from A-X (0,4) and (1,5) excitations:

(starting at 272,0 nm (0,4) and 267,9 nm (1,5))

   NO-LIF A-X emissions from (0,4) and (1,5):

(286 nm, 272 nm, 260 nm, 248 nm, 237 nm, 227 nm, 215 nm)

   hot O2-LIF (weak) (see also chapter O2)

   Rayleigh, NO-LIF and OH-LIF in 2nd order

Detected signals:

   Rayleigh scattering: UV (+ 2nd order)

   C2-LIF / Swan band emissions:

      (438 nm, 473 nm, 516 nm, 563 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (360 nm, 385 nm, 410nm, 438 nm)

   broadband fluorescence of hydrocarbon species:

      (about 300 nm to 450 nm)

   OH-LIF A-X / from A-X (2,0) excitation (weak)

   (laser intensity fluctuations during the measurement!)

Download common measurement report for detailed informations about flame, laser beam position, pulse energy, ICCD gain, etc: 

Download MS Word file:

Download Davis file:

Download ASCII file:

Download Davis file:

Download ASCII file:

CCD dynamic: 12 bit / ICCD gain: 9,9 / entrance slit: 100 mm / sum of pulses: 50 /

UV pulse energy: not measured

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