In the present work, we report the analyses of glaze and decorations present on the surface of Renaissance Umbrian pottery, performed by means of different spectroscopic and optical techniques. Two types of ancient lustre have been considered: red and gold, coming from Deruta and Gubbio. The time resolved laser induced fluorescence (LIF) signatures of the red and gold lustre were identified by applying a laser excitation at 355 nm. Laser induced breakdown spectroscopy (LIBS) technique was applied on all the ceramic layers, i.e. bisque, glaze, and both lustre and blue coloured decorations, to determine semi-quantitatively their elemental composition. The results of colorimetric measurements are also compared to the measured composition of decorative layers.
Characterisation of lustre and pigment composition in ancient pottery by laser induced fluorescence and breakdown spectroscopy
BRUNETTI, Brunetto Giovanni;
2003
Abstract
In the present work, we report the analyses of glaze and decorations present on the surface of Renaissance Umbrian pottery, performed by means of different spectroscopic and optical techniques. Two types of ancient lustre have been considered: red and gold, coming from Deruta and Gubbio. The time resolved laser induced fluorescence (LIF) signatures of the red and gold lustre were identified by applying a laser excitation at 355 nm. Laser induced breakdown spectroscopy (LIBS) technique was applied on all the ceramic layers, i.e. bisque, glaze, and both lustre and blue coloured decorations, to determine semi-quantitatively their elemental composition. The results of colorimetric measurements are also compared to the measured composition of decorative layers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
