Sample
Name
Sublimation mantle of Smectite on Water ice and Smectite intra-mixture particles 67±31 μm
Date
2014-07-30
Diameter
30.0 $mm$
Sample changes
After 21.68h of sublimation, a desiccated layer made of pure smectite, about 5.85±0.43 mm thick, covers the ice particles.
Substrate material
aluminum sample holder
Substrate comments
The sample is positionned in one of the four 60x30 mm compartments dividing the rectangular 120x60 mm sample holder with a thickness of 20mm
Comments
The initial thickness of the whole sample is 20 mm. During the experiment, the thickness of the layers in this sample is variable. See "Sample Changes".
Temperature
209.0 $K$
Type
vacuum
Fluid pressure
1.0e-05 $mbar$
Comments
The sample was kept under secondary vacuum
Source
Quartz window at 240 K
Chronology
before and during spectrum
Irradiation time
21.68 $\pm$ 0.01 $h$
Comments
The quartz window has a temperature around 240 K during the operation at low temperature, resulting in an irradiance of about 50 W.m-2 onto the sample when placed at its standard vertical position, 7 cm below the window (Pommerol et al., 2015)
Particle
Family
photons
Type
MIR photons
Radiance
Radiant flux
50.0 $\pm$ 10.0 J.s-1.m-2
Radiant fluence
3902000.0 $\pm$ 782300.0 J.s-1.m-2
Number
2
Arrangement
The upper layer formed by sublimation of the ice in the lower layer.
Layers