Cleaning and characterization of objects of cultural value by laser ablation

Gabriel M. Bilmes; Cesar Freisztav; Daniel Schinca; Alberto Orsetti

doi:10.1117/12.612671

12 August 2005 Cleaning and characterization of objects of cultural value by laser ablation

Gabriel M. Bilmes, Cesar Freisztav, Daniel Schinca, Alberto Orsetti

Proceedings Volume 5857, Optical Methods for Arts and Archaeology; 585704 (2005) https://doi.org/10.1117/12.612671
Event: Optical Metrology, 2005, Munich, Germany

Abstract

Surface ablation with nanosecond laser pulses was applied to preservation, cleaning and compositional identification of objects of cultural value. On one hand, treatments of fabrics, coins, bones, and other archeological objects are shown, as well as applications to the preservation of covers, front of books and old manuscripts made in rag paper. Damage fluence thresholds for 17 different XIXth century types of papers, made by processing textiles, were determined. On the other hand, we use the spectroscopic analysis of the plasma generated as a result of laser ablation (LIBS- laser Induced Breakdown Spectroscopy-) for the determination of the elementary composition of unique pieces in anthropology and archaeology. In particular, we show applications to the identification of trace elements in Hominide teeth, of interest concerning the analysis of eating habits. We also apply LIBS to the determination of the composition of acheological objects belonging to different pre-Columbian cultures.

Citation Download Citation

Gabriel M. Bilmes, Cesar Freisztav, Daniel Schinca, and Alberto Orsetti "Cleaning and characterization of objects of cultural value by laser ablation", Proc. SPIE 5857, Optical Methods for Arts and Archaeology, 585704 (12 August 2005); https://doi.org/10.1117/12.612671

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