Transient gratings generated by particulate suspensions: The uniformly irradiated sphere and the point source

被引：5

作者：

Frez, C ^{[1
]}

Calasso, IG ^{[1
]}

Diebold, GJ ^{[1
]}

机构：

[1] Brown Univ, Dept Chem, Providence, RI 02912 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2006年 / 124卷 / 03期

关键词：

D O I：

10.1063/1.2145761

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Expressions for the time dependence of the state variables in a transient grating experiment carried out on suspensions of particles can be determined by integration over space of the solutions for the temperature and photoacoustic pressure for a single particle. The method relies on independent computation of the thermal and acoustic modes of wave motion which are combined to give the temperature, pressure, and density in the grating as a function of time. Calculations are given for the uniformly irradiated droplet and the point source, the latter including the effects of a temperature-dependent thermal expansion coefficient. Transient grating experiments are reported in colloidal Pt that show features described in the calculation. (c) 2006 American Institute of Physics.

引用

页数：9

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