ri_soot
Constants
Complex refractive index of soot (black carbon): n + i k, wavelength in nm. Assumptions: aggregation/morphology not modeled; bulk effective optical constants representative of fresh black carbon. Temperature: ~300 K; ambient pressure; dry.
Composite sources and notes:
- Chang & Charalampopoulos (1990), Proc. R. Soc. A 430, 577–591 — 0.25–25 µm soot optical constants (canonical in combustion/atmospheric).
- Dalzell & Sarofim (1969), J. Heat Transfer 91, 100–104 — visible anchors near 0.55–0.65 µm.
- Querry (1985/1991), Optical constants of minerals and other materials (amorphous carbon) — trend guidance in MIR/FIR.
- Bond & Bergstrom (2006), Aerosol Science and Technology 40, 27–67 — review with recommended visible values.
Table design:
- 200–20,000 nm coverage for radiometric work beyond graphics; linear interpolation by ParameterLookupTable.
- Denser around UV/visible and 3–12 µm where carbon shows stronger spectral structure.
- Values are a smoothed composite to avoid sharp source-to-source discontinuities; suitable for Mie with linear interpolation.
Functions
🔥 SOOT (Black Carbon)
SOOT_REFRACTION_INDEX_LUT
Complex refractive index of soot (black carbon): n + i k, wavelength in nm. Assumptions: aggregation/morphology not modeled; bulk effective optical constants representative of fresh black carbon. Temperature: ~300 K; ambient pressure; dry.
Composite sources and notes:
- Chang & Charalampopoulos (1990), Proc. R. Soc. A 430, 577–591 — 0.25–25 µm soot optical constants (canonical in combustion/atmospheric).
- Dalzell & Sarofim (1969), J. Heat Transfer 91, 100–104 — visible anchors near 0.55–0.65 µm.
- Querry (1985/1991), Optical constants of minerals and other materials (amorphous carbon) — trend guidance in MIR/FIR.
- Bond & Bergstrom (2006), Aerosol Science and Technology 40, 27–67 — review with recommended visible values.
Table design:
- 200–20,000 nm coverage for radiometric work beyond graphics; linear interpolation by ParameterLookupTable.
- Denser around UV/visible and 3–12 µm where carbon shows stronger spectral structure.
- Values are a smoothed composite to avoid sharp source-to-source discontinuities; suitable for Mie with linear interpolation.
Kind: global constant
ri_soot(result, wavelength_nm)
🔥 SOOT (Black Carbon)
Kind: global function
| Param | Type | Description |
|---|---|---|
| result | Array.<number> | complex number, refraction index |
| wavelength_nm | number | in nanometers |