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Titolo/Abstract/Parole chiave

K-edge Radiography and applications to Cultural Heritage

Albertin, Fauzia (2011) K-edge Radiography and applications to Cultural Heritage. Tesi di Dottorato , Università degli Studi di Ferrara.

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    Abstract

    The present work of thesis is focused on application of X-ray K-edge technique to paintings. This technique allows one to achieve a topographic map of a pigment on the whole surface of the painting. The digital acquisition of radiographic images by using monochromatic X-ray beams allows to take advantage of the sharp rise of X-ray absorption coefficient of the elements, the K-edge discontinuity. Working at different energies, bracketing the K-edge peak, allows recognition of the target element. The K-edge radiography facility installed at Larix Laboratory, at Department of Physics in Ferrara, consists of a quasi-monochromatic X-ray beam obtained via Bragg diffraction on a mosaic crystal from standard X-ray source. In this work the K-edge technique and the facility used are illustrated. A characterization of the monochromatic beams in the energy range 7-40 KeV range and the elemental mapping on pictorial layers obtained are presented. At the end, a transportable facility for digital radiography is presented and some radiographic analysis of works of art performed are shown.

    Tipologia del documento:Tesi di Dottorato (Tesi di Dottorato)
    Data:10 Marzo 2011
    Relatore:Gambaccini, Mauro - Petrucci, Ferruccio
    Coordinatore ciclo:Frontera, Filippo
    Istituzione:Università degli Studi di Ferrara
    Dottorato:XXIII Anno 2008 > FISICA
    Struttura:Dipartimento > Fisica
    Soggetti:Area 02 - Scienze fisiche > FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)
    Parole chiave:Raggi X, radiografia, Beni Culturali, radiography, K-edge, Cultural Heritage,
    Depositato il:13 Apr 2012 14:56

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