Experimental study for the feasibility of using hard x-rays for micro-XRF analysis of multilayered metals

Polese, C.; Dabagov, S.B.; Esposito, A.; Hampai, D.; Gorghinian, Astrik; Liedl, A.; Ferretti, M.

doi:10.1063/1.4891523

Cited by 11 publications

(6 citation statements)

References 20 publications

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“…This decrease is the result of the reduced efficiency in the transmission of high energy photons, due to the energy dependence of the critical angle for total external reflection in the polycapillary lens (acting as a low-pass filter) (Gormley et al, 1999;MacDonald, 2010;Polese et al, 2014). This behavior is observed in Fig.…”

Section: Analytical Capabilitiesmentioning

confidence: 52%

In-situ non-destructive analysis of Etruscan gold jewels with the micro-XRF transportable spectrometer from CNA

Scrivano

Ruberto

Gómez-Tubío

et al. 2017

Journal of Archaeological Science: Reports

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A B S T R A C TThe study of valuable Cultural Heritage objects frequently requires non-destructive analysis with good sensitivity. Moreover, it is often necessary that the measures are carried out in-situ, in particular when transport of the items from the institutions to the laboratory is not allowed.In this work, the technical specifications of the micro-XRF spectrometer developed at the CNA in Seville is presented and its analytical capabilities are tested by means of the analysis of a set of Etruscan gold jewels of the National Archaeological Museum of Florence. Since these jewels are characterized by elaborate decorations, with details of typical dimensions down to tens of microns, a high lateral resolution is required to study the features of these objects. The challenge consists in the characterization of the welding/soldering zones and the details of the jewels that present a very complex geometry. This paper shows the micro-XRF in-situ analysis of 15 Etruscan gold jewels (from the VII century BCE) in order to characterize the alloy composition of sheets, threads, filigrees, granules, as well as the joining zones. Based on these results, the manufacture technique and the production process employed by the Etruscan goldsmiths could be described.

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Section: Analytical Capabilitiesmentioning

confidence: 52%

In-situ non-destructive analysis of Etruscan gold jewels with the micro-XRF transportable spectrometer from CNA

Scrivano

Ruberto

Gómez-Tubío

et al. 2017

Journal of Archaeological Science: Reports

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“…With the same devices, but different geometrical setup, polycapillary lenses can be also characterized. [24] …”

Section: Xrf Spectrometrymentioning

confidence: 97%

“…In this way, the elemental characterization of inorganic samples can be obtained. With the same devices, but different geometrical setup, polycapillary lenses can be also characterized …”

Section: Xlab Frascati: a User Facility For X‐ray Based Experimentsmentioning

confidence: 99%

RXR: A new X‐ray facility at XLab Frascati

et al. 2015

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a,dX-ray fluorescence analysis is a widely used technique in many applications. Recent advances in X-ray optics, in particular, in polycapillary manufacturing, have allowed achieving microscale spatial resolution, even with conventional sources. Nowadays, many apparatus for X-ray microfluorescence are available. But the majority of them are equipped with experimental chambers, which limit their applicability only to small-sized samples. To overcome this limitation, a new instrument named Rainbow X-Ray (RXR), optimized for large and heavy objects, has been developed at XLab Frascati. Here, we present this unit dedicated to 2D and 3D X-ray microspectroscopy (both mapping and 'colour' tomography), with a resolution between 25 and 75 m, depending from the incident energy in the range 800 eV-25 keV.

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“…For instance, optimized combination of X-ray polycapillary optics at typical XRF layouts allows a micro-scale spatial resolution even by means of conventional X-ray tubes. Thereby, detailed samples analysis [2,3] might be done including elemental 2D/3D mapping [4,5]. Nowadays, polycapillary lenses, due to their capability of efficient X-ray beam focusing [6,7], are widely used as X-ray optics essentially extending the number of applications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Since the end of 90s the National Laboratories of Frascati (last decade within the XLab Frascati laboratory [11,12]) have been intensively involved in research projects dedicated to the design and characterization of customized layouts, such as ''source-optic s-detector", for advanced applications in the fields of X-ray spectroscopy [2,3,13,14] and X-ray microscopy [15][16][17]. Last designed experimental unit, the RXR station, has been developed for advanced X-ray micro-fluorescence studies on 2-or 3-dimension stages (2D/3D lXRF) [18] with averaged spatial resolution of about ⇑ Corresponding author.…”

Section: Introductionmentioning

confidence: 99%