- Title
- NIR reflectance spectra of granular H2O ice, gypsum and ice-gypsum mixtures in martian conditions
- DOI
- 10.26302/SSHADE/EXPERIMENT_MM_20161207_004
- Data reference
- Massé, Marion (2009): NIR reflectance spectra of granular H2O ice, gypsum and ice-gypsum mixtures in martian conditions. SSHADE/SSTONE (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_MM_20161207_004
- Publications
- Database(s)
- Experimentalists
- Type(s)
- laboratory measurement
- Description
- In order to investigate the spectral behavior of ice–gypsum mixtures, we have acquired laboratory reflectance spectra of ice samples containing various volumetric proportions of gypsum. The ice was produced by condensation of liquid water on a cooled metal plate. It was then crushed to obtain grain sizes between 500 and 600 µm. These ice grains were homogenously mixed with an synthetic pure gypsum powder. The samples were then placed in a liquid nitrogen cryostat to reproduce the martian pressure and temperature conditions (7 mbar, 150 K) and their spectra were acquired with a Nicolet 5700 Fourier Transform Infrared Spectrometer.
- Number of spectra
- 4
- Variable type(s)
-
- sample composition
- Instrument
- Nicolet 5700 - reflection Near-IR
- Sample holder
- Copper sample holder closed by a sapphire window and cooled by a liquid nitrogen cryostat
- Standard medium
- unknown
- 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 1.0 - 5.0 0.003 0.003
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
- 0.0°
- Azimuth angle
- 0.0°
- Phase angle
- 0.0°
- Observation mode
- single spot
- Date begin - end
- 2009-06-23 - 2009-06-23
Versions
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000)