Experiment
Title
NIR reflectance spectra of granular H2O ice, gypsum and ice-gypsum mixtures in martian conditions
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.
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
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 (2017-07-18 16:57:23 UTC+0000)