Authors:
G. Suber Fondazione U. Bordoni Roma

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M. Bertolotti Sezione Fisica Dipartimento di Energetica Univ. Roma I Roma Italy

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C. Sibilia Sezione Fisica Dipartimento di Energetica Univ. Roma I Roma Italy

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A. Ferrari Dipartimento di FIsica Univ. Napoli Italy

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F. Genel Ricciardiello Istituto di Chimica Applicata Univ. Trieste Italy

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Transverse photothermal deflection spectroscopy(PDS) is applied for the determination of thermal diffusivities of solid surfaces. The theory of PDS is briefly recalled and some approximated analytical formulae concerning the transverse configuration are derived. In materials where the thermal diffusivity is smaller than that of the air, the dependence of the deflection angle on the displacement between pump and probe beams is shown to have a minimum that relates to the thermal diffusivity, thereby allowing its straightforward measurement. Measurements carried out on Al2O3 samples with different porosities at room temperature show a good agreement between experiment and theory.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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