HYSTERESIS AT THE GAS-LIQUID AND LIQUID-SOLID PHASE-TRANSITIONS OF CAPILLARY CONFINED CO2 - A POSITRONIUM ANNIHILATION STUDY

被引：33

作者：

DUFFY, JA

WILKINSON, NJ

FRETWELL, HM

ALAM, MA

机构：

[1] H.H. Wills Phys. Lab., Bristol Univ.

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 03期

关键词：

D O I：

10.1088/0953-8984/7/3/003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The hysteresis behaviour of capillary confined CO2 gas is studied through the positron/positronium annihilation technique. The arrangement of the confining medium (VYCOR glass) allowed simultaneous measurement of the bulk and pore confined phase behaviour. Isobaric temperature cycling showed marked hysteresis at the gas-liquid and liquid-solid phase boundaries for the confined gas. Observations at the gas-liquid transition are in agreement with capillary condensation theories and simple ideas are proposed to explain the liquid-solid transition behaviour.

引用

页码：L27 / L31

页数：5

共 14 条

[1] TEMPERATURE-DEPENDENCE OF GAS-ADSORPTION ON A MESOPOROUS SOLID - CAPILLARY CRITICALITY AND HYSTERESIS [J].