2026-08-20T00:20:47Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/79372023-11-07T01:05:28Zcom_10259.4_2538com_10259.4_2477com_10259.4_106com_10259_2604com_10259.4_2551com_10259_5086com_10259.4_2502col_10259_7927col_10259.4_2552col_10259_7074

00925njm 22002777a 4500 dc Rahman, Md. Ashiqur author Fuente Leis, Germán F. de la author Carretero Díaz, José Miguel author Maingi, Evan Maina author Alonso Abad, Mª Pilar author Alonso Alcalde, Rodrigo author Chapoulie, Rémy author Schiavon, Nick author Angurel Lámban, Luis Alberto author 2021-11 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 efciency, 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 efects 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 efective laser cleaning parameters in burst mode have been identifed 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 efective conservation of bone archaeological artifacts. 2523-3963 http://hdl.handle.net/10259/7937 10.1007/s42452-021-04850-8 2523-3971 Sub-ns laser Cleaning Archaeological bone Cultural heritage Sierra de Atapuerca Sub-ns-pulsed laser cleaning of an archaeological bone from the Sierra de Atapuerca, Spain: a case study