Optical and spectroscopic techniques offer unique possibilities for nondestructive or micro-destructive characterization of painted Cultural Heritage surfaces. The development of fast laser scanners in combination with sensitive CCD detector gave the chance to design and operate portable systems suitable to in-situ an remote spectroscopic imaging. Different prototypes have been developed and patented to collected reflectance and fluorescence images excited at different ultraviolet and visible laser wavelengths, Raman and LIBS signals. Portable integrated instruments suitable for operation at different distance from a 1.5 to 30 m, have been assembled and operated in laboratory on multilayered samples and in field campaigns on CH painted surfaces carried out within the COBRA and ADAMO regional projects. Results obtained on painted surfaces on monuments in Latium will be presented demonstrating the potentiality of combined in situ use of optical and spectroscopic tools in solving specific CH characterization problems.
|Titolo:||Laser remote and in situ spectroscopic diagnostics to CH surfaces|
|Data di pubblicazione:||2020|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|