Experiment
Title
Near-IR bidirectional reflection spectra (i=0°/e=30°) of volcanic tuff with different amounts of adsorbed H2O at -30°C
DOI
10.26302/SSHADE/EXPERIMENT_BS_20191231_001
Data reference
Pommerol, Antoine; Schmitt, Bernard (2007): Near-IR bidirectional reflection spectra (i=0°/e=30°) of volcanic tuff 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_20191231_001
Publications
Type(s)
laboratory measurement
Description
Near-IR bidirectional reflection spectra (at fixed geometry: i=0°/e=30°) of volcanic tuff 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 1.72 - 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
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
2019-12-31 09:28:28 UTC+0000
Version (Date)
#1 (2019-12-31 09:12:18 UTC+0000, Updated: 2019-12-31 19:10:57 UTC+0000)
Sponsors
  • Programme National de Planétologie (PNP)
  • Centre National d'Etudes Spatiales (CNES) (OMEGA/Mars Express)