C2 Radical (C2) - LIF:

Transitions: Swan bands: d 3Pg <--> a 3Pu (0,3), (1,4), (2,5) bands (excitation wavelength: about 685,2 nm to 619,5 nm)

             Swan bands: d 3Pg <--> a 3Pu (0,2), (1,3), (2,4) bands (excitation wavelength: about 619,5 nm to 566,0 nm)

Appearance of the C2 transitions: Swan bands: Degraded to the violet

Excitation wavelength: 670,0 to 565,0 nm (VIS) and 335,0 nm to 282,5 nm (UV)

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

Grating of the spectrograph: 100 l/mm

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Grating: 100 lines/mm, only VIS excitation, Emissions: 290 to 710 nm

EES, point of measurement:

   center (inner cone of the flame)

Excitation wavelength:

   UV:  no UV excitation

   VIS: 669,00 nm to 565,00 nm

Emission wavelength:

   290 nm to 710 nm

EES, point of measurement:

    off-center  (outer range of the flame)

Excitation wavelength:

   UV: no UV excitation

   VIS: 669,00 nm to 565,00 nm

Emission wavelength:

   290 nm to710 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: no UV excitation

   VIS: 611,92 nm

Detected signals:

   Rayleigh scattering: VIS

   C2-LIF d-a / from d-a (0,3), (1,4) ... excitations:

      (Swan bands, starting at 685,2 nm) (weak)

   C2-LIF d-a / from d-a (0,2), (1,3) ... excitations:

      (Swan bands, starting at 619,5 nm)

   C2-LIF / Swan band emissions:

      (438 nm, 473 nm, 516 nm, 563 nm, 619 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (385 nm)

   broadband fluorescence of hydrocarbon species:

      (about 300 nm to 450 nm)

Detected signals:

   Rayleigh scattering: VIS

   C2-LIF d-a, no others

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

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CCD dynamic: 12 bit / ICCD gain: 9,2 / entrance slit: 50 mm / sum of pulses: 50 /

VIS pulse energy: about 2,0 to 16,5 mJ/pulse

   

Grating: 100 lines/mm, UV and VIS excitation, Emissions: 240 to 655 nm, part 1

EES, point of measurement:

   center (inner cone of the flame)

Excitation wavelength:

   UV:  330,50 nm to 299,00 nm

   VIS: 661,00 nm to 598,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   240 nm to 655 nm

EES, point of measurement:

    off-center  (outer range of the flame)

Excitation wavelength:

   UV: 330,50 nm to 299,00 nm

   VIS: 661,00 nm to 598,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

    240 nm to 655 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 306,26 nm

   VIS: 612,52 nm

   (UV and VIS simultaneously)

Detected signals:

   Rayleigh scattering: UV (+2nd order) and VIS

   C2-LIF d-a / from d-a (0,3), (1,4) ... excitations:

      (Swan bands, starting at 685,2 nm) (weak)

   C2-LIF d-a / from d-a (0,2), (1,3) ... excitations:

      (Swan bands, starting at 619,5 nm)

   C2-LIF / Swan band emissions:

      (438 nm, 473 nm, 516 nm, 563 nm, 619 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (385 nm)

   broadband fluorescence of hydrocarbon species:

      (about 300 nm to 450 nm)

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

Detected signals:

   Rayleigh scattering: UV (+2nd order) and VIS

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

(starting at: 302,2 nm (0,0) and 312,2 nm (1,1))

   OH-LIF A-X emissions:

(278 - 300 nm, 302 - 330 nm, 342 - 355 nm, 405 nm)

   Rayleigh and OH-LIF in 2nd order

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

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CCD dynamic: 12 bit / ICCD gain: 8,3 / entrance slit: 80 mm / sum of pulses: 10 /

UV pulse energy: not measured

   

Grating: 100 lines/mm, UV and VIS excitation, Emissions: 220 to 635 nm, part 2

EES, point of measurement:

   center (inner cone of the flame)

Excitation wavelength:

   UV:  300,00 nm to 274,00 nm

   VIS: 600,00 nm to 558,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   220 nm to 635 nm

EES, point of measurement:

    off-center  (outer range of the flame)

Excitation wavelength:

   UV: 300,00 nm to 274,00 nm

   VIS: 600,00 nm to 558,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

    220 nm to 635 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 281,01 nm

   VIS: 562,02 nm

   (UV and VIS simultaneously)

Detected signals:

   Rayleigh scattering: UV (+2nd order) and VIS

   C2-LIF d-a / from d-a (0,2), (1,3) ... excitations:

      (Swan bands, starting at 619,0 nm)

  C2-LIF d-a / from d-a (0,1), (1,2) ... excitations:

      (Swan bands, starting at 563,0 nm)

   C2-LIF / Swan band emissions:

      (438 nm, 473 nm, 516 nm, 563 nm, 619 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 (1,0) excitation

Detected signals:

   Rayleigh scattering: UV (+2nd order) and VIS

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

(starting at: 278,5 nm (1,0) and 287,4 nm (2,1))

   OH-LIF A-X emissions:

(261 - 270 nm, 278 - 300 nm, 302 - 333 nm, 342 - 359 nm, 405 nm)

   Rayleigh and OH-LIF in 2nd order

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

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Download Davis file:

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CCD dynamic: 12 bit / ICCD gain: 9,0 / entrance slit: 80 mm / sum of pulses: 20 /

UV pulse energy: about 1,7 to 2,5 mJ/pulse

   

Grating: 100 lines/mm, only UV excitation, Emissions: 240 to 655 nm, part 1

EES, point of measurement:

   center (inner cone of the flame)

Excitation wavelength:

   UV:  330,50 nm to 299,00 nm

   VIS: no VIS excitation

Emission wavelength:

   240 nm to 655 nm

EES, point of measurement:

    off-center  (outer range of the flame)

Excitation wavelength:

   UV: 330,50 nm to 299,00 nm

   VIS: no VIS excitation

Emission wavelength:

    240 nm to 655 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 306,56 nm

   VIS: no VIS excitation

Detected signals:

   Rayleigh scattering: UV

   C2-LIF / Swan band emissions:

      (473 nm, 516 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (385 nm, 410 nm) (weak)

   broadband fluorescence of hydrocarbon species:

      (about 300 nm to 450 nm)

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

Detected signals:

   Rayleigh scattering: UV

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

(starting at: 302,2 nm (0,0) and 312,2 nm (1,1))

   OH-LIF A-X emissions:

(278 - 300 nm, 302 - 330 nm, 342 - 355 nm, 405 nm)

   Rayleigh and OH-LIF in 2nd order

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:

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CCD dynamic: 12 bit / ICCD gain: 8,3 / entrance slit: 80 mm / sum of pulses: 10 /

UV pulse energy: not measured

   

Grating: 100 lines/mm, only UV excitation, Emissions: 220 to 635 nm, part 2

EES, point of measurement:

   center (inner cone of the flame)

Excitation wavelength:

   UV:  300,00 nm to 274,00 nm

   VIS: no VIS excitation

Emission wavelength:

   220 nm to 635 nm

EES, point of measurement:

    off-center  (outer range of the flame)

Excitation wavelength:

   UV: 300,00 nm to 274,00 nm

   VIS: no VIS excitation

Emission wavelength:

    220 nm to 635 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 284,13 nm

   VIS: no VIS excitation

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)

   OH-LIF A-X / from A-X (1,0) excitation

Detected signals:

   Rayleigh scattering: UV

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

(starting at: 278,5 nm (1,0) and 287,4 nm (2,1))

   OH-LIF A-X emissions:

(261 - 270 nm, 278 - 300 nm, 302 - 333 nm, 342 - 359 nm, 405 nm)

   Rayleigh and OH-LIF in 2nd order

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

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