Open AccessINFRARED DIVERGENCE THEORY OF ULTRASONIC ABSORPTION IN GLASSES
Author(s) -
Fau Xi-Qing,
Guoliang Wang,
Jiang Wang-Ye,
Dai Pei-Ying,
Liu Fu-Sui
Publication year - 1985
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.34.1270
Subject(s) - ultrasonic sensor , relaxation (psychology) , materials science , universality (dynamical systems) , absorption (acoustics) , thermodynamics , absorption spectroscopy , dissipation , divergence (linguistics) , infrared , microscopic theory , condensed matter physics , optics , physics , composite material , acoustics , psychology , social psychology , linguistics , philosophy
Starting from the unified theory of low-frequency fluctuation, dissipation, and relexation processes, we studied the ultrasonic absorption in the thermal activation pro-cess in glasses. The theory involves only a single relaxation time and differs from the theory of distributed relaxation times. Nontheless, it can explain the experimental cha-racteristics of the ultrasonic absorption in glasses and the universality of these charac-teristics independent of kinds of materials, which couldn't be interpreted by the pre-vious theory with the distribution of relaxation times.