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Measurement of thermal diffusivity by the photoacoustic method

A computer simulation

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Abstract

Analysis of the photoacoustic signalvs. the modulation frequency allows the determination of thermal diffusivity. Computer simulations have been carried out to determine the optimal conditions, in the case of rear surface illumination, for which the thermal diffusivity is accurately measured. In accordance with these conditions, measurements were performed on a reference sample (silicon).

Zusammenfassung

Die Analyse des fotoakustischen Signales in Abhängigkeit von der Modulierungsfrequenz erlaubt die Feststellung des thermischen Diffusionsvermögens. Für den Fall einer Oberflächenbestrahlung, für die das thermische Diffusionsvermögen präzise vermessen wurde, ergaben Computersimulationen die optimalen Bedingungen. In Übereinstimmung mit diesen Bedingungen wurden Messungen an einer Referenzprobe (Silikon) durchgeführt.

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Authors and Affiliations

  1. Laboratoire de Physique et Biophysique, EA 228, Université René Descartes, Paris V, France

    A. Hadj-Sahraoui, A. Tahir & P. Peretti

  2. Département de Recherches Physiques, URA 71 CNRS, Université Pierre et Marie Curie, VI, Paris, France

    G. Louis

Authors
  1. A. Hadj-Sahraoui
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  2. A. Tahir
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  3. G. Louis
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  4. P. Peretti
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Hadj-Sahraoui, A., Tahir, A., Louis, G. et al. Measurement of thermal diffusivity by the photoacoustic method. Journal of Thermal Analysis 44, 795–802 (1995). https://doi.org/10.1007/BF02547265

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  • DOI: https://doi.org/10.1007/BF02547265

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