CO2 snow with 0.54% of a PAH mix (Layer #1) | CSS | SSHADE

Layer

Name: Layer #1

Physical characteristics

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 conditions

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

Materials in layer

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.