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Crossover criticality in ionic solutions
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DOI：10.1063/1.1338982.png)
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Abstract
En 中文
To examine the nature of criticality in ionic fluids we have analyzed experimental liquid-liquid coexistence and susceptibility data for various ionic solutions. We show that ionic fluids generally exhibit crossover or, at least, a tendency to crossover from Ising behavior asymptotically close to the critical point to mean-field behavior upon increasing distance from the critical point. This crossover is governed by two physical parameters: a rescaled coupling constant which reflects the strength and range of intermolecular interactions and a cutoff length. We conclude that the crossover critical behavior in ionic fluids is primarily governed by the cutoff length, which emerges as a new length scale that cannot be identified with the effective molecular-interaction range. An analogy between crossover critical phenomena in ionic fluids and in polymer solutions is discussed. (C) 2001 American Institute of Physics.
Keywords:
LIQUID PHASE-TRANSITION
FIELD CRITICAL-BEHAVIOR
NONASYMPTOTIC CRITICAL-BEHAVIOR
LONG-RANGE INTERACTIONS
ISING-LIKE SYSTEMS
N-HEXYL BORATE
MEAN-FIELD
COEXISTENCE CURVE
CRITICAL-POINT
CRITICAL EXPONENTS
Journal
IF:
3.1
Papers:
7.2W
Citations:
23.2W
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