Sample
Name
CO2 snow with 0.54% of a PAH mix
Date
2017-10-17
Mass
30.1616 $\pm$ 1.5005 $g$
Substrate material
aluminium
Substrate comments
cylindrical 48mm diameter, 20mm deep
Comments
sublimating sample with an initial thickness of 20 mm decreasing with time
Temperature
173.0 $\pm$ 2.0 $K$
Time at T
0.0 $min$
Type
molecular gas
Fluids
Fluid temperature
173.0 $\pm$ 2.0 $K$
Fluid pressure
6.0 $\pm$ 0.5 $mbar$
Title
preparation of a mixture of PAH and CO2 snow

Precursors

Matters

Produced sample

Sample
CO2 snow with 0.54% of a PAH mix (this sample)
Processing steps
Step Chronology Date Type Process Changes
#1 before layer formation mixing mixing a weighted amount of PAHs mix with CO2 ice in a liquid N2 cooled stainless steel bowl the final mixture of CO2 ice and PAH is weighted to determine the PAH mass fraction
#2 before layer formation layer formation filling the liq N2 cooled cell with the PAHs/CO2 ice mixture, plus some manual densification and surface flattening flat homogeneous PAHs/CO2 ice mixture sample
Comments
some very thin and very fine grained layer of water ice may condense on the sample during closure of the cryogenic cell