Fiche du document
2024
- ISIDORE Id: 10670/1.dc07c5...
- hal: hal-04766397
- doi: 10.1007/s00339-024-08026-0
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00339-024-08026-0
http://creativecommons.org/licenses/by-nc-nd/ , info:eu-repo/semantics/OpenAccess
Mots-clés
Heritage science Archaeology Palaeontology Radiation damage Synchrotron · X-ray absorption spectroscopy X-ray diffraction X-ray imaging XEOL X-ray fluorescence spectroscopy -det]Sujets proches
American lion Pumas Felis couguar Mountain lion Felis hippolestes Felis concolor Catamount Felis californica Puma concolor Felis improcera CougarCiter ce document
S. Schöder et al., « Heritage research at the PUMA beamline », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1007/s00339-024-08026-0
Métriques
Partage / Export
Résumé
The PUMA beamline, created for the heritage community and accessible by all fields of science, welcomed its first users in 2019. Its optical layout uses a horizontal focusing mirror to prefocus the light emitted from the wiggler source for the experimental endstation. It provides a 5 µm × 7 µm microbeam for XRF, XAS, XRD and XEOL analysis or a wide 20 × 5 mm full field when the beam is defocused, and the KB mirrors are retracted. An extremely stable fixed-exit Si(111) monochromator is used to select the wavelength. Many experiments have been performed at PUMA, particularly in archaeology, paleontology, conservation, art history and in identifying safer conditions of irradiation for precious heritage samples. XRF analysis has been used, for example, to show the effects of the interaction of Palaeolithic ivory with soil; to identify the elemental composition of mineralized textiles and to reveal hidden morphologies of fossils.
