Hydroxyl Radical (OH) - LIF:

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

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

Excitation wavelength: 302,0 to 278,5 nm

Flame/Burner: hydrogen/oxygen (H2/O2) flame of a welding torch

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Grating: 100 lines/mm, UV and VIS excitation, Emissions: 190 to 605 nm

EES, point of measurement:

   center (center of the flame)

Excitation wavelength:

   UV:  300,00 nm to 274,00 nm

   VIS: 600,00 nm to 548,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   190 nm to 605 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 283,38 nm

   VIS: 566,76 nm

   (UV and VIS simultaneously)

Detected signals:

   Rayleigh scattering: UV 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)

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

   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:

CCD dynamic: 12 bit / ICCD gain: 7,9 / entrance slit: 80 mm / sum of pulses: 20 / 

UV pulse energy: not measured

   

Grating: 100 lines/mm, UV and VIS excitation, Emissions: 190 to 605 nm, O2/H2 ratio > 1

EES, point of measurement:

   center (center of the flame)

Excitation wavelength:

   UV:  280,90 nm to 274,00 nm

   VIS: 561,80 nm to 548,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   190 nm to 605 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 279,79 nm

   VIS: 558,58 nm

   (UV and VIS simultaneously)

Detected signals:

   Rayleigh scattering: UV and VIS

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

(starting at: 278,5 nm (1,0))

   OH-LIF A-X emissions:

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

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

   hot O2-LIF (see also chapter O2)

   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:

CCD dynamic: 12 bit / ICCD gain: 9,9 / entrance slit: 80 mm / sum of pulses: 50 / 

UV pulse energy: about 2,65 to ... mJ/pulse

   

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 260 to 295 nm

EES, point of measurement:

   center (center of the flame)

Excitation wavelength:

   UV:  295,00 nm to 278,00 nm

   VIS: 590,00 nm to 556,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   260 nm to 295 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 287,32 nm

   VIS: 574,64 nm

   (UV and VIS simultaneously)

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)

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

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: 9,7 / entrance slit: 80 mm / sum of pulses: 20 / 

UV pulse energy: about 2,20 to 2,65 mJ/pulse

   

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 295 to 330 nm

EES, point of measurement:

   center (center of the flame)

Excitation wavelength:

   UV:  295,00 nm to 278,00 nm

   VIS: 590,00 nm to 556,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   295 nm to 330 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 286,39 nm

   VIS: 572,78 nm

   (UV and VIS simultaneously)

Detected signals:

   Rayleigh scattering: UV (top left)

   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:

(278 - 300 nm, 302 - 333 nm)

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

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: 9,7 / entrance slit: 80 mm / sum of pulses: 20 / 

UV pulse energy: about 2,00 to ... mJ/pulse

   

Grating: 1200 lines/mm, UV and VIS excitation, Emissions: 330 to 365 nm

EES, point of measurement:

   center (center of the flame)

Excitation wavelength:

   UV:  295,00 nm to 278,00 nm

   VIS: 590,00 nm to 556,00 nm

   (UV and VIS simultaneously)

Emission wavelength:

   330 nm to 365 nm

Single Image:

   local distribution of signals inside the flame

Excitation wavelength:

   UV: 282,16 nm

   VIS: 564,32 nm

   (UV and VIS simultaneously)

Detected signals:

   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:

(302 - 333 nm, 342 - 359 nm)

   hot O2-LIF

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: 9,9 / entrance slit: 80 mm / sum of pulses: 50 / 

UV pulse energy: about 2,00 to 3,10 mJ/pulse

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