Hannover 2010 – wissenschaftliches Programm

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DD: Fachverband Didaktik der Physik

DD 19: Postersitzung

DD 19.32: Poster

Dienstag, 9. März 2010, 16:00–18:00, Foyer Osteingang

An educational setup for a laser induced breakdown spectroscopy (LIBS) system and its usage for the characterization of cultural heritage objects — •Ioannis Sianoudis¹, Anno Hein³, Giorgos Mitsou¹, Maria Chatzidakis², and Eleni Drakaki⁴ — ¹TEI of Athens, Dep. of Physics Chem.&MT, Ag. Spyridonos, 12210 Egaleo, Greece, jansian@teiath.gr — ²Dep.of Conservation of Antiquities & Works of Art — ³Institute of Materials Science, N.C.S.R. Demokritos — ⁴Physics Dep, NTUA, Athens

This paper presents an experimental setup for laser induced breakdown spectroscopy(LIBS), developed for educational purposes, used by science students and students specializing in cultural heritage objects. The setup comprises basically a Q-switched Nd:YAG Laser and a fiber optic spectrometer, both equipment by Physics laboratories, assembled in-house. The proposed laboratory exercises are focused on one hand on imparting the knowledge about physical principles and phenomena associated with the creation of plasma and the radiation processes. On the other hand the students will be trained in the operation and handling process itself, in terms of specific applications. Various parameters have been tested, concerning the laser-matter interaction and the process issues, such as calibration, interpretation of spectra and evaluation of results. Exemplary measurements as an autonomous learning and teaching module were implemented, demonstrating the qualitative and quantitative analysis of various materials typically associated with cultural heritage objects, such as metal standards and original objects and replicas of mural paintings.