PLIF Signal Normalization
Background-correct and normalize PLIF signal by sheet energy and collection gain.
Description
PLIF normalization subtracts background and divides by sheet energy and collection gain.
PLIF normalization subtracts background and divides by sheet energy and collection gain. The corrected signal may be negative.1
Background-correct and normalize PLIF signal by sheet energy and collection gain.
When to use PLIF Signal Normalization
Use this tool to background-correct and normalize PLIF signal by sheet energy and collection gain.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use PLIF Signal Normalization and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter measuredSignal, backgroundSignal, laserSheetEnergyMillijoules, collectionGain using the field table and calculation rules, then run the tool.
- Read backgroundCorrectedSignal, normalizedSignalPerMillijoule. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| measuredSignal | Measured PLIF signal | number; minimum: 0 | Required |
| backgroundSignal | Background signal | number; minimum: 0 | Required |
| laserSheetEnergyMillijoules | Laser-sheet energy (mJ) | number; minimum: 0 | Required |
| collectionGain | Collection gain | number; minimum: 0 | Required |
Enter nonnegative measured/background signals and positive energy and gain. Return corrected signal and normalized signal per mJ.
corrected=measured−background; normalized=corrected/(energy_mJ×gain) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| backgroundCorrectedSignal | Background-corrected signal | number |
| normalizedSignalPerMillijoule | Normalized signal (1/mJ) | number |
{
"input": {
"measuredSignal": 110,
"backgroundSignal": 10,
"laserSheetEnergyMillijoules": 2,
"collectionGain": 5
},
"output": {
"backgroundCorrectedSignal": 100,
"normalizedSignalPerMillijoule": 10
}
}Limitations and assumptions
No fluorescence saturation, absorption, quenching or concentration conversion is supplied.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use SRS Contrast: Calculate stimulated Raman loss contrast from pump-on and pump-off probe measurements. For a complementary task, use Fluorescence Upconversion: Gaussian-deconvolve gate width from a fluorescence-upconversion cross-correlation.
References
-
PLIF Signal Normalization — tool.io
Similar or alternative tools
- SRS Contrast
Calculate stimulated Raman loss contrast from pump-on and pump-off probe measurements.
- Fluorescence Upconversion
Gaussian-deconvolve gate width from a fluorescence-upconversion cross-correlation.