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External proton beam analysis of layered objects.

W Wagner1, C Neelmeijer

  • 1Forschungszentrum Rossendorf, Abteilung FWIA, Postfach 510119, D-01314, Dresden, Germany.

Analytical and Bioanalytical Chemistry
|October 1, 1995
PubMed
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External MeV proton beams enable non-destructive elemental analysis and depth profiling of large objects like stainless steel and historic paintings using Particle-Induced X-ray Emission (PIXE) and Rutherford Backscattering Spectrometry (RBS). This reveals elemental composition and pigment distribution, offering insights into material science and art conservation.

Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Art Conservation Science

Background:

  • Elemental composition and depth information are crucial for material characterization and historical artifact analysis.
  • Non-destructive analytical techniques are highly desirable for valuable objects such as historic paintings and large industrial products.

Purpose of the Study:

  • To demonstrate the capability of simultaneous external Particle-Induced X-ray Emission (PIXE) and Rutherford Backscattering Spectrometry (RBS) using MeV protons in air.
  • To analyze large-scale stainless steel products and a historic painting non-destructively.
  • To obtain elemental composition and depth distribution information for layered systems.

Main Methods:

  • Utilized MeV proton beams for ion-beam analysis conducted in air.

Related Experiment Videos

  • Employed simultaneous external PIXE and RBS.
  • Obtained depth information via PIXE energy variation and RBS for near-surface analysis.

    • Main Results:

    • Successfully analyzed extended-size stainless steel products and a historic painting non-destructively.
    • Determined elemental composition, areal densities, and impurities in layered systems up to tens of mg/cm(2).
    • Acquired depth distribution data for pigments in the painting, providing insights into historical paint techniques.

    Conclusions:

    • Simultaneous external PIXE and RBS with MeV protons in air is an effective non-destructive method for analyzing large objects and layered systems.
    • The technique provides valuable elemental and depth information applicable to materials science and art conservation.
    • Depth profiling of pigments offers significant insights into historical artistic methods.