HYPERSONIC RELAXATION IN LIQUID METHANOL

被引:11
作者
BERMEJO, FJ
RAMIREZ, R
MARTINEZ, JL
PRIETO, C
BATALLAN, F
GARCIAHERNANDEZ, M
机构
[1] UNIV AUTONOMA MADRID,DEPT FIS APLICADA C-IV,E-28049 CANTO BLANCO,SPAIN
[2] UNIV AUTONOMA MADRID,CSIC,INST CIENCIA MAT,E-28049 CANTO BLANCO,SPAIN
关键词
D O I
10.1088/0953-8984/3/5/006
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The hypersonic velocity and sound attenuation for liquid CD3OD, CH3OH and CD3OD/6% D2O are reported for a temperature range of 190 K-300 K. The results, measured from Brillouin-Mandelstam scattering, indicate the presence of at least one viscous relaxation phenomenon, for which the relaxation time is evaluated. The non-Arrhenius behaviour of the latter magnitudes evidences the appearance at low temperatures of a second relaxational mechanism.
引用
收藏
页码:569 / 576
页数:8
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