Matter
Name
Spherical particles (67±31 μm diameter) of salty water ice produced by freezing droplets of a 15 wt.% Na2SO4 solution in liquid nitrogen
Family
Family
solid
Database
Experimentalists
Origins
laboratory
Provider
Space Research and Planetary Sciences Division, University of Bern
Preparation
raw
Method
Nebulization of the salt solution and freezing by deposition in liquid nitrogen
Phase type
solid
Shape
granular powder
Texture
loose granular
Type of porosity
particulate
Texture
compact
Grain sizes
Grains Size min Size max Size median Size width Size mass fraction Grain shape
#1 30.0 μm 40.0 μm 0.03 spherical
#2 40.0 μm 50.0 μm 0.21 spherical
#3 50.0 μm 60.0 μm 0.31 spherical
#4 60.0 μm 70.0 μm 0.13 spherical
#5 70.0 μm 80.0 μm 0.11 spherical
#6 80.0 μm 90.0 μm 0.06 spherical
#7 90.0 μm 100.0 μm 0.02 spherical
#8 100.0 μm 110.0 μm 0.02 spherical
#9 110.0 μm 120.0 μm 0.05 spherical
#10 120.0 μm 130.0 μm 0.01 spherical
#11 130.0 μm 140.0 μm 0.0 spherical
#12 140.0 μm 150.0 μm 0.01 spherical
#13 150.0 μm 160.0 μm 0.01 spherical
#14 160.0 μm 170.0 μm 0.01 spherical
Size method
Manual counting on cryo-Scanning Electron Microscopy images of fresh ice particles
Number
1
Mode of mixing
heterogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Spherical particles (67±31 μm diameter) of salty water ice produced by freezing droplets of a 15 wt.% Na2SO4 solution in liquid nitrogen 1.0
Title
Preparation procedure

Produced matter

Matter
Spherical particles (67±31 μm diameter) of salty water ice produced by freezing droplets of a 15 wt.% Na2SO4 solution in liquid nitrogen (this matter)
Processing steps
Step Date Type Process Changes
#1 fluid physical The salt solution is prepared by dissolving at ambient temperature the required amount of salt in deionized water. Spherical liquid water droplets are formed.
#2 mechanical The liquid solution is injected into a sonotrode and spread out as a thin film on the conical shaped nozzle surface at the output of the sonotrode. Ultrasonic vibrations delivered to the sonotrode nozzle disintegrate the liquid into micro-droplets. Spherical liquid water droplets are formed.
#3 thermal The droplets of deionized/ultra-pure water, initially liquid, undergo solidification as they contact the liquid nitrogen Spherical water ice particles are formed.
Publications