- Title
- Near-IR bidirectional reflection spectra (i=0°/e=30°) of Smectite SWy-2 with different amounts of adsorbed H2O at -30°C
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20120803_001
- Data reference
- Pommerol, Antoine; Schmitt, Bernard (2007): Near-IR bidirectional reflection spectra (i=0°/e=30°) of Smectite SWy-2 with different amounts of adsorbed H2O at -30°C. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20120803_001
- Publications
- Database(s)
- Experimentalists
- Type(s)
- laboratory measurement
- Description
- Near-IR bidirectional reflection spectra (at fixed geometry: i=0°/e=30°) of Smectite SWy-2 with different amounts of adsorbed H2O at -30°C, under increasing, then decreasing pressure of H2O vapor.
- Number of spectra
- 21
- Variable type(s)
-
- sample composition
- Comments
- adsorption cycle of H2O under different pressures: sample with series of varying H2O content
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- Aluminum plate with 1 mm deep circular hole (3cm diameter) inside P-T controled chamber closed by saphire window and cooled by Peltier elements (SERAC environmental cell)
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- NIR
- Valid spectral range(s)
-
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge #1 1.2 - 2.0 0.02 0.024 0.01 #2 2.0 - 4.18 0.02 0.048 0.001 - Filters
-
Type Center/Edge (${\mu}m$) Width (${\mu}m$) Place #1 long-pass filters of the spectro-gonio radiometer
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
- 0.1°
- Resolution observation
- 4.1°
Illumination
Observation
- Comments
- partial polarization variable with wavelength (from monochromator grating)
- Observation mode
- single spot
- Image size
- 23.1 x 20.0 $mm$
- Spatial resolution
- 21.5 ${\pm}$ 1.5 $mm$
- Comments
- sligthly elliptic observation spot
- Date begin - end
- 2007-01-01 - 2007-01-01
Versions
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000, Updated: 2019-12-31 19:13:02 UTC+0000)
- Sponsors
-
- Programme National de Planétologie (PNP)
- Centre National d'Etudes Spatiales (CNES) (OMEGA/Mars Express)