Frequency domain photothermal radiometry with spherical solids

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DOIResolve DOI: http://doi.org/10.1063/1.2721424
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TypeArticle
Journal titleJournal of Applied Physics
Volume101
Issue8
Article number083503
AbstractMotivated by increasing practical and industrial applications of photothermal techniques in the measurement of materials of various shapes with curvature, we extend the applications of photothermal diagnostics to solid spheres, in which both theoretical and experimental photothermal radiometry studies on spherical geometries and thermal diffusivity of the sample are discussed. Based on the Green function method, a full thermal-wave field distribution of a spherical solid is obtained. The characteristics of the thermal-wave field with respect to thermophysical properties of the material, the diameter of the solid, the size of the incident laser beam, and the measurement angle are discussed. Experimental results with steel spheres of different diameters exhibit good agreement between the theory and the experiments.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedYes
NPARC number8900964
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Record identifier291e1890-51e3-4a74-99b0-016b9f19ff5a
Record created2009-04-22
Record modified2017-06-09
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