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DOE OSTI · 22089375

Laser induced thermal-wave fields in multi-layered spherical solids based on Green function method

Jie, Zhang·Chinhua, Wang·Guangxi, Xie·Mandelis, Andreas
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Abstract

In this paper, we establish a Green-function based theoretical model for evaluating solid multi-layered spherical samples which are illuminated by a frequency modulated incident beam. The specific Green function for the multi-layered spherical structure is derived and an analytical expression for the thermal-wave field in such a spherical sample is presented. The characteristics of the thermal-wave field with respect to the thermophysical, geometrical, and measurement parameters are presented. Unlike the quadruple method, the Green function method is capable of evaluating thermal-wave fields at any point of multi-layered structures with arbitrary intensity distributions of incident laser beams. Furthermore, experimental validation is also presented in the form of experimental results with steel spheres of various diameters.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYBEAMSDISTRIBUTIONGREEN FUNCTIONLASER RADIATIONLAYERSSIMULATIONSOLIDSSPHERICAL CONFIGURATION

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Jie, Zhang, Chinhua, Wang, Guangxi, Xie, Mandelis, Andreas. 2012-08-01. Laser induced thermal-wave fields in multi-layered spherical solids based on Green function method. https://doi.org/10.1063/1.4743011

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