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Adsorption-desorption isotherms and x-ray diffraction of ar condensed into a porous glass matrix
Publikationstyp
Journal Article
Date Issued
1999
Sprache
English
Author(s)
Volume
60
Issue
18
Start Page
12657
End Page
12665
Citation
Physical Review B - Condensed Matter and Materials Physics 60 (18): 12657-12665 (1999)
Publisher DOI
Scopus ID
Publisher
American Physical Society
Ar condensed into a porous glass matrix has been investigated by simultaneous measurements of adsorption-desorption isotherms and x-ray diffraction patterns as function of the pore filling above and below the melting point. The chemical-potential–temperature phase diagram has been established. It is consistent with a first-order phase transition between the adsorbate state and the capillary condensed state, above and below the melting temperature. The adsorbate and the capillary condensed state can also be distinguished in the diffraction patterns. A consistent picture of the structure and the thermodynamics is obtained.
DDC Class
530: Physik