SHEAR RELAXATION IN A SIMPLE LIQUID

被引：26

作者：

MORKEL, C

BODENSTEINER, T

机构：

[1] Dept. of Phys., Tech. Univ. Munchen, Garching

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷

关键词：

D O I：

10.1088/0953-8984/2/S/037

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In a neutron scattering experiment on liquid caesium a positive dispersion of the collective modes has been observed, indicating the existence of shear relaxations in the liquid. The measured solid-like high-frequency sound propagation with velocity c(infinity) > c(s)-with c(s) being the well known adiabatic velocity of sound-yields the experimental determination of the shear modulus G(infinity)in the fluid for the first time and confirms the evidence that the observed positive dispersion of collective modes is due to viscous shear relaxation beyond the hydrodynamic limit of a dense liquid near the melting point.

引用

页码：SA251 / SA256

页数：6

共 19 条

[1]

BALUCANI U, 1990, COMMUNICAITON

[2]

BODENSTEINER T, 1990, THESIS TU MUNCHEN

[3]

Boon J-P., 1980, MOL HYDRODYNAMICS

[4] MODE-COUPLING THEORY OF SIMPLE CLASSICAL LIQUIDS [J].

BOSSE, J ;

GOTZE, W ;

LUCKE, M .

PHYSICAL REVIEW A, 1978, 17 (01) :434-446

[5] SOUND DISPERSION IN SIMPLE LIQUIDS [J].

CHUNG, CH ;

YIP, S .

PHYSICS LETTERS A, 1974, A 50 (03) :175-176

[6] DENSITY FLUCTUATIONS IN LIQUID RUBIDIUM .1. NEUTRON-SCATTERING MEASUREMENTS [J].

COPLEY, JRD ;

ROWE, JM .

PHYSICAL REVIEW A, 1974, 9 (04) :1656-1666

[7] SHORT-WAVELENGTH SOUND MODES IN LIQUID ARGON [J].

DESCHEPPER, IM ;

VERKERK, P ;

VANWELL, AA ;

DEGRAAF, LA .

PHYSICAL REVIEW LETTERS, 1983, 50 (13) :974-977

[8] HIGH FREQUENCY WAVES IN LIQUID LEAD [J].

DORNER, B ;

PLESSER, T ;

STILLER, H .

PHYSICA, 1965, 31 (10) :1537-&

[9] PROPERTIES OF COLLECTIVE MODES IN FLUIDS - METHODOLOGY [J].

EGELSTAFF, PA ;

GLASER, W .

PHYSICAL REVIEW A, 1985, 31 (06) :3802-3811

[10] PROPERTIES OF COLLECTIVE MODES IN FLUIDS - EXPERIMENTAL RESULTS [J].

GLASER, W ;

EGELSTAFF, PA .

PHYSICAL REVIEW A, 1986, 34 (03) :2121-2132

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