ROLE OF HYDROGEN-BOND COOPERATIVITY AND FREE-VOLUME FLUCTUATIONS IN THE NON-ARRHENIUS BEHAVIOR OF WATER SELF-DIFFUSION - A CONTINUITY-OF-STATES MODEL

被引:38
作者
LAMANNA, R
DELMELLE, M
CANNISTRARO, S
机构
[1] UNIV PERUGIA,DIPARTIMENTO FIS,UNITA IST NAZL FIS MAT,I-06100 PERUGIA,ITALY
[2] UNIV LIEGE,INST PHYS,B-4000 SART,BELGIUM
[3] UNIV TUSCIA,DIPARTIMENTO SCI AMBIENTALI,SEZ CHIM & FIS,I-01100 VITERBO,ITALY
来源
PHYSICAL REVIEW E | 1994年 / 49卷 / 04期
关键词
D O I
10.1103/PhysRevE.49.2841
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Some thermodynamic and transport properties of normal and supercooled water have been interpreted in the framework of a dynamic extension of the polychromatic percolation model in which both the recently reported evidence for a temperature-dependent H-bond cooperativity and free-volume fluctuations within the percolative patches are included. The proposed model, which allowed us to fit the experimental self-diffusion data as a function of the temperature to an accuracy comparable to that obtained by a power law, is consistent with the existence of a continuity of states between liquid and solid phases, rather than being indicative of the presence of singularities in the supercooled region.
引用
收藏
页码:2841 / 2850
页数:10
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