Matter
- Name
- CO2 snow
- Family
- solid
- Database
- Experimentalists
- Level
- local matter
- Origins
- laboratory
- Provider
- IPAG - made from CO2 N45 liquid - Air Liquide
- Local reference code
- SnowPack CO2
- Method
- solidification of liquid CO2 droplets by decompression within the SnowPack (R) device providing 312.5 cm3 of CO2 ice in the form of a dense pellet
- Phase type
- solid
- Texture
- sintered granular
- Type of porosity
- porous
- Porosity
- 0.5 $\pm$ 0.05
- Density
- 0.78 $\pm$ 0.08 $g.cm^{-3}$
- Texture
- compact
- Grain compacity
- 0.5 $\pm$ 0.05
- Grain density
- 0.78 $\pm$ 0.08 $g.cm^{-3}$
- Grain sizes
-
Grains Size min Size max Size median Size width Size mass fraction Grain shape #1 40.0 ${\mu}m$ 70.0 ${\mu}m$ 0.07 $\pm$ 0.04 equant #2 70.0 ${\mu}m$ 100.0 ${\mu}m$ 0.14 $\pm$ 0.07 equant #3 100.0 ${\mu}m$ 130.0 ${\mu}m$ 0.18 $\pm$ 0.07 equant #4 130.0 ${\mu}m$ 170.0 ${\mu}m$ 0.3 $\pm$ 0.1 equant #5 170.0 ${\mu}m$ 200.0 ${\mu}m$ 0.14 $\pm$ 0.07 equant #6 200.0 ${\mu}m$ 230.0 ${\mu}m$ 0.07 $\pm$ 0.04 irregular #7 230.0 ${\mu}m$ 0.1 $\pm$ 0.05 irregular - Size method
- binocular photographs
- Comments
- mean grain size: 150 µm
- Title
- preparation of CO2 snow
- Matters
- Matter
- CO2 snow (this matter)
- Processing steps
-
Step Date Type Process Changes #1 fluid physical solidification of liquid CO2 droplets by decompression from a CO2 bottle (99.995% pure) with plunger within the SnowPack (R) device formation of a dense pellet (312.5 cm3) of $CO_2$ ice - Comments
- This matter is a generic matter for all CO2 ices made by this technique