- Title
- Reduced Stokes Q parameter of Iron Sulfide (FeS) samples (grain sizes up to 100μm) measured at different wavelengths (from 0.5 to 2.95 µm) and at different scattering angles
- DOI
- 10.26302/SSHADE/EXPERIMENT_LB_20260917_001
- Data reference
- Bonduelle, Myriam; Poch, Olivier (2025): Reduced Stokes Q parameter of Iron Sulfide (FeS) samples (grain sizes up to 100μm) measured at different wavelengths (from 0.5 to 2.95 µm) and at different scattering angles. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LB_20260917_001
- Publications
- Database(s)
- Experimentalists
- Type(s)
- laboratory measurement
- Description
- We measured the degree of linear polarisation (for scattering angles from 20° to 140°) at different wavelengths (from 0.5 to 2.95 µm) of FeS samples (grain sizes up to 100 µm)
- Number of spectra
- 9
- Variable type(s)
-
- illumination-observation geometry
- Instrument
- SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- open sample holder (7 mm diameter, 1 mm deep) in anodized aluminum (not blackened)
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- Vis, NIR
- Valid spectral range(s)
-
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge #1 0.55 - 0.66 #2 0.68 - 1.38 #3 1.4 - 2.95
Definition: emergence angle is positive with origin at nadir. Azimuth origin (increasing clockwise) is arbitrary.
- Observation geometry
- directional
- Observation mode
- two variable angles
Illumination
- Type of polarization
- no
Observation
- Comments
- a motorized stage continuously rotates a quartz-wedge depolarizer (DPU-25) to ensure that the incident light is depolarized
- Observation mode
- single spot
- Date begin
- 2025-01-01
Versions
- Release date
- 2026-09-18 07:33:30+0000 UTC
- Version (Date)
- #1 (2026-09-18 07:33:30+0000 UTC, Updated: 2026-09-18 07:33:30+0000 UTC)
- Sponsors
-
- Programme National de Planétologie (PNP) (EPOPEE)