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- Title
Exploring the viability of combined laser-induced breakdown spectroscopy and Raman spectroscopy for stratigraphic analysis of murals containing isomeric pigments: a case study on realgar and orpiment.
- Authors
Sun, Duixiong; Li, Hanyun; Zhang, Guoding; Yin, Yaopeng; Su, Maogen; Bai, Xueshi; Sikorski, Marek; Zhang, Denghong
- Abstract
A novel combined measurements techniques has been designed in this work, enabling the acquisition of laser-induced breakdown spectroscopy (LIBS) and Raman spectral signals at the same point on a sample. The application of this combined technique to the analysis of multi-layered mock-up blocks painted with orpiment and realgar pigments has yielded significant insights. By correlating variations in the emission line intensity of characteristic elements within the LIBS spectra with depth-specific Raman spectra, the number of laser pulses that penetrated the pigment layers has been accurately determined, thereby establishing a method to measure layer thickness. Finally, the technique wasto analysis the actual mural fragment from Mogao Cave 196, determining the types of pigment and the thickness of the pigment layers.
- Subjects
LASER-induced breakdown spectroscopy; RAMAN spectroscopy; LASER pulses; ARSENIC sulfide; WORK design
- Publication
Heritage Science, 2024, Vol 12, Issue 1, p1
- ISSN
2050-7445
- Publication type
Article
- DOI
10.1186/s40494-024-01376-1