CH - Radical - LIF:

Transition: A2D - X2P (0,0) band of CH

Appearance of the CH A-X bands: Degraded to the violet

Excitation wavelength: 442,0 to 420,0 nm

Flame/Burner: methane/air (CH4/air) flame of a Bunsen burner

Grating of the spectrograph: 1200 l/mm

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Grating: 1200 lines/mm, only VIS excitation, Emissions: 415 to 450 nm, spectrograph entrance slit: 1000 mm

Rayleigh scattering removed with correct selection of ICCD-delay (ICCD opens after Rayleigh)

EES, point of measurement:

   flame front (flame front of the flame)

Excitation wavelength:

   UV:  no UV excitation

   VIS: 222,50 nm to 209,62 nm

Emission wavelength:

  415 nm to 450 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: no UV excitation

   VIS: 430,88 nm

  

Detected signals:

   almost no Rayleigh scattering (ICCD opens after Ray.)

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

(starting at about 440,0 nm (0,0))

   CH-LIF A-X emissions:

(431 nm)

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

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Download Davis file:

Download ASCII file:

CCD dynamic: 12 bit / ICCD gain: 9,9 / entrance slit: 1000 mm /sum of pulses: 50 /

UV pulse energy:  about ... to ... mJ/pulse

 

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 360 to 395 nm

Rayleigh scattering removed with correct selection of ICCD-delay (ICCD opens after Rayleigh)

EES, point of measurement:

   flame front (flame front of the flame)

Excitation wavelength:

   UV:  221,00 nm to 209,72 nm

   VIS: 442,00 nm to 419,44 nm

   (UV and VIS simultaneously)

Emission wavelength:

  360 nm to 395 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 215,40 nm

   VIS: 430,80 nm

   (UV and VIS simultaneously)

  

Detected signals:

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

(starting at about (440 nm, weak) to 420 nm (0,0))

   CH-LIF A-X emissions:

(389 nm to 396 nm)

   CH-LIF B-X / from B-X (1,2) excitation:

(starting at about 432 nm to 442 nm (1,2))

   CH-LIF B-X emissions:

(389 nm to 396 nm)

   C2-LIF C-A / from C-A (0,2), (1,3) ... excitations:

      (Deslandres-d'Azambuja bands, starting at 438,0 nm)

   C2-LIF / Deslandres d'Azambuja band emissions:

      (385 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:

CCD dynamic: 12 bit / ICCD gain: 9,8 / entrance slit: 100 mm /sum of pulses: 50 /

UV pulse energy:  not measured

 

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 395 to 430 nm

Rayleigh scattering removed with correct selection of ICCD-delay (ICCD opens after Rayleigh)

EES, point of measurement:

   flame front (flame front of the flame)

Excitation wavelength:

   UV:  221,00 nm to 209,72 nm

   VIS: 442,00 nm to 419,44 nm

   (UV and VIS simultaneously)

Emission wavelength:

  395 nm to 430 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 215,40 nm

   VIS: 430,80 nm

   (UV and VIS simultaneously)

Detected signals:

   almost no Rayleigh scattering (ICCD opens after Ray.)

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

(starting at about 440,0 nm (0,0))

   CH-LIF A-X emissions:

(431 nm, 420 nm to 430 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:

CCD dynamic: 12 bit / ICCD gain: 9,8 / entrance slit: 100 mm /sum of pulses: 50 /

UV pulse energy:  not measured

 

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 430 to 465 nm

Rayleigh scattering removed with correct selection of ICCD-delay (ICCD opens after Rayleigh)

EES, point of measurement:

   flame front (flame front of the flame)

Excitation wavelength:

   UV:  221,00 nm to 209,72 nm

   VIS: 442,00 nm to 419,44 nm

   (UV and VIS simultaneously)

Emission wavelength:

  430 nm to 465 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 215,40 nm

   VIS: 430,80 nm

   (UV and VIS simultaneously)

  

Detected signals:

   almost no Rayleigh scattering (ICCD opens after Ray.)

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

(starting at about 440,0 nm (0,0))

   CH-LIF A-X emissions:

(431 nm, 431 nm to 440 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:

CCD dynamic: 12 bit / ICCD gain: 9,8 / entrance slit: 100 mm /sum of pulses: 50 /

UV pulse energy:  not measured

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