The microscopic nonequilibrium process in solids under transient heating

B. L. Zhou*, G. H. He, Y. J. Gao, W. L. Zhao, J. D. Guo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A brief review of studies on the dynamic process of thermal expansion since the eighties is given. A magnitude of difference of one to two orders between the results of theoretical calculations and experimental observations of the characteristic time is discussed. The nonequilibrium localized phonon gas in a "hot spot" is studied using the Boltzmann equation, leading to a soliton-like solution. It gives the way to fill the gap of the above-mentioned difference between theory and experiment. The lattice relaxation of a laser rod is developed theoretically and verified experimentally. Different expansion processes of a high-Tc super-conductor below and above Tc imply the existence of some new features of excitons in the high-Tc state.

Original languageEnglish
Pages (from-to)481-492
Number of pages12
JournalInternational Journal of Thermophysics
Volume18
Issue number2
Publication statusPublished - Mar 1997
Externally publishedYes

Keywords

  • High-T superconductor
  • Nonequilibrium process
  • Thermal expansion
  • Transient heating

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