Sample
Name
Water frost (~80 µm) over Dark basalt mixed with 75 wt% Water ice particles (67±31 μm)
Database
Experimentalists
Date
2017-07-12
Sample inside the thermal vacuum chamber during the measurement.
Physical characteristics
Thickness
10.08 $\pm$ 1.002 $mm$
Diameter
20.0 $mm$
Substrate material
aluminum sample holder covered with a black aluminum tape
Temperature
120.0 $\pm$ 2.0 $K$
Type
ambient air
Fluid pressure
1.0 $bar$
Number
2
Arrangement
A layer of water frost was condensed on the layer of mineral and ice powder
Layers
Title
Formation of Water frost on a Mixture of Dark basalt powder with water ice particles

Precursors

Matters
Materials

Produced sample

Sample
Water frost (~80 µm) over Dark basalt mixed with 75 wt% Water ice particles (67±31 μm) (this sample)
Processing steps
Step Chronology Date Type Process Changes
#1 before layer formation mixing The ice particles and the mineral powder are blended together with the help of a vortex mixer while they are repeatedly plunged into liquid nitrogen to avoid the sublimation and metamorphism of ice during the process. Ice and dust particles are mixed at the particles scale.
#2 during layer formation layer formation Because porosity influences the reflectance of the samples, we filled the sample holders without compressing the samples: the sample holders are first overfilled and then the excess is removed with a spatula. In this way, we obtain non-compacted samples with flat surfaces. We obtain a non-compacted sample with a flat surface.
#3 during layer formation layer formation Water vapour from the air abvove the sample condensed at the surface of the sample. We obtain a layer of water frost on top of the sample.