Layer
Name
Layer #1
Type of layer
granular
Mass
30.1616 $\pm$ 1.5005 $g$
Texture
sintered granular
Type of porosity
porous
Porosity
0.4 $\pm$ 0.03
Density
0.94 $\pm$ 0.04 $g.cm^{-3}$
Comments
sublimating sample with an initial thickness of 20mm decreasing with time
Formation mode
manual deposition
Temperature
195.0  $\pm$ 5.0  $K$
Comments
The sample is prepared in an initially Liquid N2 cooled cell (> 77 K) but CO2 ice is at 195 K. Slight manual compression on the sample
Number
5
Arrangement
homogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Anthracene powder 0.3 0.0017982000000000002
Phenanthrene-d10 powder 0.3 0.0017982000000000002
Pyrene powder 0.3 0.0017982000000000002
CO2 snow 0.9943016200000001
H2O ice impurity 0.00029838 small but strongly variable $H_2O$ ice impurity due to water vapor condensation on $CO_2$ snow.