Sample
Name
Crushed CO2 ice (400 to 800 microns) mixed with 3 wt.% fine-grained spherical water ice (4.5 microns average diameter)
Date
2018-02-14
Provider
Planetary Ice Laboratory, Space and Planetary Science division, Physics Institute, University of Bern
Thickness
20.0 $\pm$ 2.0 $mm$
Diameter
20.0 $mm$
Volume
16000.0 $mm^3$
Surface roughness
smooth
Sample changes
Possible slow sublimation and/or metamorphism of the CO2 ice at the surface and deposition of water frost
Substrate material
Black anodized aluminum
Temperature
140.0 $\pm$ 20.0 $K$
Time at T
2419.0 $\pm$ 600.0 $s$
Temperature max
200.0 $K$
Type
purged air
Fluid temperature
140.0 $\pm$ 10.0 $K$
Fluid pressure
1000.0 $\pm$ 50.0 $mbar$
Time at T, P, pH
2419.0 $\pm$ 600.0 $s$
Comments
The sample is in contact with a mixture (unknown proportions) of molecular nitrogen produced by the sublimation of liquid nitrogen at the bottom of the sample holder (major), CO2 gas sublimated from the sample itself (minor) and ambient air leaking into the chamber (minor)