Bidirectional Vis-NIR reflectance spectra of 95%-N2:5%-CH4:500ppm-CO tholins under vaccuum at 80°C (i=0°, e=30°)
- Title
- Bidirectional Vis-NIR reflectance spectra of 95%-N2:5%-CH4:500ppm-CO tholins under vaccuum at 80°C (i=0°, e=30°)
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20201201_001
- Data reference
- Fayolle, Marie; Quirico, Eric; Potin, Sandra (2018): Bidirectional Vis-NIR reflectance spectra of two tholins samples (+ mixtures with pyrrhotite) at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°) and their extracted single scattering albedo and optical constants spectra. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20201201_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Intensity unit
- no unit
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- open sample holder (12 mm diameter, 6 mm deep) in anodized aluminum
- 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 0.68 - 1.42 0.02 0.096 0.001 #2 1.44 - 2.5 0.02 0.192 0.002 - Scan number
- 10
- Comments
- a set of high pass filters at the monochromator output to filter the higher orders
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- Observation geometry
- bidirectional
- Observation mode
- fixed angles
- Incidence angle
- 0.0°
- Emergence angle
- 30.0°
- Azimuth angle
- 0.0°
- Phase angle
- 30.0°
- Resolution illumination
- 5.8°
- Resolution observation
- 4.1°
- Comments
- angular resolution is full width
Illumination
Observation
- Comments
- partial polarization variable with wavelength (from monochromator grating)
- Observation mode
- single spot
- Image size
- 7.5 x 7.5 $mm$
- Name
- Tholins LATMOS 95%-N2:5%-CH4:500ppm-CO
- Changes
- slight decrease of C-H bonds (band 1.92-2.00 µm)
- Comments
- measured under vaccuum in the SERAC environmental cell with one saphire window
- Experiment
- Bidirectional Vis-NIR reflectance spectra of two tholins samples (+ mixtures with pyrrhotite) at various illumination-observation geometries (i=0°,30°,60° - e= -70° to 70°) and their extracted single scattering albedo and optical constants spectra
- Date begin
- 2018-06-29
- Release date
- 2021-06-02 08:37:16 UTC+0000
- Version (Date)
- #1 (2021-06-02 08:37:16 UTC+0000, Updated: 2021-06-02 08:37:16 UTC+0000)
- History
-
Date Mode Version Status Comments 2020-12-31 20:33:56 UTC+0000 first import #1 valid version
- Analysis
- raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (0.68-2.1µm) and 2) with "Infragold" using its relative spectral reflectance (2.1-2.5µm). The effect of the mltiple reflections on the saphire windows have been corrected.
- Quality flag
- 4
- Validator(s)