Home › Cell Biology › Scattering And Absorption of Light in Planetary Regoliths
Cell Biology JoVE (Open Access) Citable · DOI

Scattering And Absorption of Light in Planetary Regoliths

DOI: 10.3791/59607-v
What you'll learn
  • ✓ Apply numerical methods to model light scattering in densely-packed particulate media
  • ✓ Interpret asteroid and comet surface reflectance data using radiative transfer models
  • ✓ Compute scattering properties of planetary regolith from experimental measurements
Protocol

Numerical and experimental methods are presented for multiple scattering of light in discrete random media of densely-packed particles. The methods are utilized to interpret the observations of asteroid (4) Vesta and comet 67P/Churyumov-Gerasimenko.

Difficulty
advanced
Total time
~40–60 hours (including numerical modeling, experimental measurements, and computational simulations)

Steps

1
Measure light scattering in discrete particulate samples

Set up and conduct experimental measurements of light scattering properties in densely-packed particle media using laboratory instrumentation.

▶ 01:29
2
Model densely-packed spherical particle media

Build numerical models of mm-sized densely-packed spherical media to simulate light interaction with particulate systems.

▶ 04:04
3
Compute reflectance spectrum of asteroid Vesta

Apply modeling techniques to interpret observed spectroscopic data from asteroid (4) Vesta and calculate its reflectance properties.

▶ 04:52
4
Generate final Vesta spectrum using SIRIS4 software

Execute computational simulations with SIRIS4 software to produce complete spectral models of Vesta's surface reflectance.

▶ 06:29
5
Calculate radiative transfer with coherent backscattering

Implement radiative transfer equations including coherent backscattering effects to refine light scattering predictions in regolith.

▶ 07:21
6
Compute scattering properties for comet 67P nucleus

Apply developed numerical methods to determine scattering and absorption characteristics of comet 67P/Churyumov-Gerasimenko's surface material.

▶ 08:15
7
Analyze scattering and absorption results

Synthesize computed spectra and measured data to characterize how light interacts with planetary regolith surfaces.

▶ 09:01
💬 Comments coming soon