ri_pollen
Constants
Complex refractive index of pollen (sporopollenin-rich organic shell): n + i k, wavelength in nm. Assumptions: dry pollen (no internal water), ~300 K, bulk-effective constants; morphology not modeled. Notes and composite sources/guidance:
- Pollen exine composed largely of sporopollenin; visible n typically ~1.53–1.57; very small k in visible, stronger in UV.
- Organic functional groups show bands: strong C–H/O–H stretch complex near 3.2–3.5 µm, carbonyl/other modes near 5.8–6.2 µm, and features around 6.8–7.3 µm; far-IR tails are modest compared to silicates.
- This LUT is designed for radiometric/Mie use over 200–20,000 nm with linear interpolation. Sampling is denser near bands.
- Composite guidance: polymer/biopolymer optics (e.g., Querry optical constants compendium), aerosol brown-organics literature, and typical measured visible n for biological tissues/pollen. Values are smooth and representative, not species-specific.
Functions
🌿 POLLEN (Organic)
POLLEN_REFRACTION_INDEX_LUT
Complex refractive index of pollen (sporopollenin-rich organic shell): n + i k, wavelength in nm. Assumptions: dry pollen (no internal water), ~300 K, bulk-effective constants; morphology not modeled. Notes and composite sources/guidance:
- Pollen exine composed largely of sporopollenin; visible n typically ~1.53–1.57; very small k in visible, stronger in UV.
- Organic functional groups show bands: strong C–H/O–H stretch complex near 3.2–3.5 µm, carbonyl/other modes near 5.8–6.2 µm, and features around 6.8–7.3 µm; far-IR tails are modest compared to silicates.
- This LUT is designed for radiometric/Mie use over 200–20,000 nm with linear interpolation. Sampling is denser near bands.
- Composite guidance: polymer/biopolymer optics (e.g., Querry optical constants compendium), aerosol brown-organics literature, and typical measured visible n for biological tissues/pollen. Values are smooth and representative, not species-specific.
Kind: global constant
ri_pollen(result, wavelength_nm)
🌿 POLLEN (Organic)
Kind: global function
| Param | Type | Description |
|---|---|---|
| result | Array.<number> | complex number, refraction index |
| wavelength_nm | number | in nanometers |