Journal
SN APPLIED SCIENCES
Volume 3, Issue 12, Pages -Publisher
SPRINGER INT PUBL AG
DOI: 10.1007/s42452-021-04850-8
Keywords
Sub-ns laser; Cleaning; Archaeological bone; Sierra de Atapuerca; Cultural Heritage
Categories
Funding
- H2020-MSCA-ITN-EJD/EDARCHMAT action funding under the Marie Sklodowska-Curie grant [766311]
- Departamento de Ciencia, Universidad y Sociedad del Conocimiento of Gobierno de Aragon Construyendo Europa desde Aragon [T54_20R]
- Ministerio de Ciencia, Innovacion y Universidades [PGC 2018-093925B-C33]
- Junta de Castilla y Leon
- Fundacion Atapuerca
- Marie Curie Actions (MSCA) [766311] Funding Source: Marie Curie Actions (MSCA)
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The controlled laser irradiation parameters using sub-nanosecond pulsed laser technology with an emission wavelength in the near Infrared regime have been assessed on a Pleistocene bone from Sierra de Atapuerca in Spain. The study identified the most effective laser cleaning parameters in burst mode to optimize the emission parameters of the laser, avoiding damage to the underlying original bone surface. This research helps pave the way for safer laser cleaning procedures for the conservation of bone archaeological artifacts.
Controlled laser irradiation parameters using recently developed sub-nanosecond pulsed laser technology with emission wavelength in the near Infrared regime (1064 nm) have been assessed on a Pleistocene bone from the archaeological site of Sierra de Atapuerca, Spain. Burst pulse mode was employed to explore contaminant removal efficiency, while at the same time, assessing the degree of damage produced to the underlying original substrate surface. The surface morphology and composition of the deteriorated bone have been characterized, along with the effects of laser irradiation at 1064 nm, using Optical Microscopy (OM), Scanning Electron Microscopy-with Energy Dispersive X-ray Spectrometry (SEM-EDS), and X-ray Photoelectron Spectroscopy (XPS). The most effective laser cleaning parameters in burst mode have been identified in order to optimize the emission parameters of the laser, thus localizing its interaction within the outermost layers of contaminants and degradation products, avoiding damage to the underlying original bone surface. Hence, threshold cleaning and substrate damage values have been determined for this new sub-ns laser, paving the way to safer laser cleaning procedures that may be useful for the effective conservation of bone archaeological artifacts.
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