Phase shift of photoacoustic signals from microparticles in liquids
作者:
Takehiko Kitamori,
Masaaki Fujii,
Tsuguo Sawada,
Yohichi Gohshi,
期刊:
Journal of Applied Physics
(AIP Available online 1985)
卷期:
Volume 58,
issue 4
页码: 1456-1459
ISSN:0021-8979
年代: 1985
DOI:10.1063/1.336075
出版商: AIP
数据来源: AIP
摘要:
The wave equation in which the source term is coupled with the thermal energy migration was analyzed, and the physical meaning of the phase of photoacoustic signals generated in turbid solutions was clarified. These theoretical results, partially verified by experiments, showed the possibility for novel thermal characterizations and size measurement methods of microparticles. The theoretical limitation of the size measurement was 102A˚ for samples with nonradiative relaxation times of 1 nsec.
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