Capillary sublimation of Ar in mesoporous glass

The condensation of Ar into mesoporous glass has been studied by adsorption isotherms and optical transmission for the solid state of the pore filling. The change of the adsorption isotherms with respect to the liquid regime is interpreted in terms of triple-point wetting. The transmission data suggest that the mechanism both of pore filling and emptying relies on advancing menisci quite in contrast to the liquid regime where this mode is reserved to pore emptying.

DDC Class

530: Physik

540: Chemie

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Capillary sublimation of Ar in mesoporous glass