HYSTERESIS DURING ISOTHERMAL SCANNING THROUGH THE GAS-LIQUID TRANSITION OF CARBON-DIOXIDE CONFINED IN NANOMETER PORES

Authors
WILKINSON NJ DUFFY JA FRETWELL HM ALAM MA
Citation
Nj. Wilkinson et al., HYSTERESIS DURING ISOTHERMAL SCANNING THROUGH THE GAS-LIQUID TRANSITION OF CARBON-DIOXIDE CONFINED IN NANOMETER PORES, Physics letters. A, 204(3-4), 1995, pp. 285-290
Citations number
16
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
204
Issue
3-4
Year of publication
1995
Pages
285 - 290
Database
ISI
SICI code
0375-9601(1995)204:3-4<285:HDISTT>2.0.ZU;2-J
Abstract
Scanning hysteresis behaviour at the gas-liquid transition of CO2 conf ined in pores of average diameter similar to 40 Angstrom has been stud ied by positronium annihilation spectroscopy. Closer inspection of pos itron 2 gamma annihilation reveals a significant difference on increas ing and decreasing the pressure through the transition, which is expla ined in terms of a larger liquid-gas interface on pore filling. The re sults favour the network model as the origin of the observed hysteresi s.