Spherical particles of salty H2O ice (SPIPA-B type, 67 µm average diameter, with 5 wt.% MgSO4) | BYPASS

Sample

Name: Spherical particles of salty H2O ice (SPIPA-B type, 67 µm average diameter, with 5 wt.% MgSO4)

Owner of sample

Database

BYPASS

Experimentalists

Rafael Ottersberg

Origin of sample

Date: 2024-04-05
Provider: Planetary Ice Laboratory, Space and Planetary Science division, Physics Institute, University of Bern

Image

Sample of spherical particles of salty H2O ice (SPIPA-B type, 67 µm average diameter, with 5 wt.% MgSO4) during sublimation. The VIS-NIR reflectance spectrum is collected over the outlined Region of Interest (red).

Physical characteristics

Thickness: 15.0 $\pm$ 2.0 $mm$
Diameter: 100.0 $mm$
Surface roughness: smooth
Sample changes: Sublimation of the water ice and accumulation of salt at the surface.
Substrate material: Black aluminum tape

Sample environment: Temperature

Temperature: 182.1 $\pm$ 4.0 $K$
Temperature max: 120.0 $K$

Sample environment: Fluid

Type: vacuum
Fluid pressure: 3.22e-07 $\pm$ 1.0e-07 $mbar$
Time at T, P, pH: 0.0 $s$
Comments: Residual pressure in the chamber from the equilibrium between water vapor produced by sublimation and active pumping

Documentation and publication

Publications

Ottersberg et al., 2025, Icarus

Layers in sample

Number

Layers

Spherical particles of salty H2O ice (SPIPA-B type, 67 µm average diameter, with 5 wt.% MgSO4) , 15.0 $mm$

Sample processings