- Name
- Sublimation residue made of mineral mixture (Magnetite 63wt%, NH4-nontronite 22wt%, Antigorite 9wt%, Dolomite 6wt%) on Water ice particles 67±31μm mixed with 1wt% of the same mineral mixture at 173 K
- Database
- Experimentalists
- Date
- 2019-04-23
- Thickness
- 20.0 $\pm$ 1.0 $mm$
- Diameter
- 48.0 $mm$
- Surface roughness
- smooth
- Sample changes
- After 13h under high vacuum, the sublimation of water ice left a desiccated layer on top of the sample, made of the minerals which covers the ice particles still sublimating below this layer. This upper layer gets thicker with time, while the lower ice layer gets thinner with time.
- Substrate material
- black aluminum tape
- Substrate comments
- Cylindrical container of 4.8 cm diameter and 2.0 cm depth, which had been coated with black matte aluminum tape on the inside.
- Comments
- The initial thickness of the whole sample is 20 mm. As the sublimation goes on, the thickness of the sublimation mantle layer increases while the thickness of the ice layer below decreases.
- Temperature
- 173.0 $K$
- Temperature max
- 173.0 $K$
- Type
- vacuum
- Fluid pressure
- 1.5e-06 $mbar$
- Comments
- The sample was kept under high vacuum
- Pressure
- 1.5e-06 $mbar$
- Comments
- The surface of the sample absorbs thermal infrared radiation emitted from the top and the walls of the vacuum chamber, so the water ice sublimates progressively.
- Number
- 2
- Arrangement
- The upper layer formed by sublimation of the ice in the lower layer.
- Layers