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X-ray Compton line scan tomography*

  • Andreas Kupsch , Axel Lange , Manfred P. Hentschel , Gerd-Rüdiger Jaenisch , Nikolay Kardjilov , Christian Tötzke , Henning Markötter , André Hilger and Ingo Manke
Published/Copyright: November 18, 2015
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Materials Testing
From the journal Materials Testing Volume 57 Issue 11-12

Abstract

The potentials of incoherent X-ray scattering (Compton) computed tomography (CT) are investigated. The imaging of materials of very different atomic number or density at once is generally a perpetual challenge for X-ray tomography or radiography. In a basic laboratory set-up for simultaneous perpendicular Compton scattering and direct beam attenuation tomography are conducted by single channel photon counting line scans. This results in asymmetric distortions of the projection profiles of the scattering CT data set. In a first approach, corrections of Compton scattering data by taking advantage of rotational symmetry yield tomograms without major geometric artefacts. A cylindrical sample composed of PE, PA, PVC, glass and wood demonstrates similar Compton contrast for all the substances, while the conventional absorption tomogram only reveals the two high order materials. Comparison to neutron tomography reveals astonishing similarities except for the glass component (without hydrogen). Therefore, Compton CT offers the potential to replace neutron tomography, which requires much more efforts.

Kurzfassung

Als Alternative zur Neutronentomographie wird das Potenzial der Computertomographie (CT) mit inkohärenter Röntgen-Streustrahlung (Compton-Streuung) untersucht. Die gleichzeitige Abbildung von Materialien sehr unterschiedlicher Ordnungszahlen oder Dichten ist eine wiederkehrende Herausforderung für die Radiologie und die Computertomographie mit Röntgenstrahlung. Die Messungen ergeben asymmetrische Projektionsprofile für Sinogramme der Streuintensität. Am Beispiel einer Probe bestehend aus verschiedenen Polymeren (Polyethylen, Polyamid, PVC), Glas und Holz wird in den Tomogrammen ein hochaufgelöster “Comptonkontrast” vergleichbarer Dynamik erreicht, während den simultan gemessenen “Absorptionskontrast” ausschließlich die starken Absorber (Glas und PVC) zeigen. Der Vergleich mit ähnlich auflösender Neutronentomographie zeigt vergleichbare Kontraste und eröffnet mithin die Möglichkeit, diese künftig durch Compton-Tomographie im Labormaßstab zu ersetzen.

§Correspondence Address, Dr. Andreas Kupsch, BAM-8.5, Unter den Eichen 87, 12205 Berlin, Germany. E-mail:

Dr. rer. nat. Andreas Kupsch, born in 1968, studied Physics at Dresden University of Technology, Germany, where he completed his PhD thesis on structural properties of quasicrystals in 2004. Since then he has been affiliated with the X-ray Topography Group (now part of the Micro NDE division) of BAM (Federal Institute for Materials Research and Testing), Berlin, Germany. His main activities are all related to high energy X-ray crystallography, computed tomography and refractive imaging. He is a lecturer for X-ray scattering and spectroscopy at Dresden International University (DIU). In 2014, he became Senior Scientist at BAM with research interests in the development and application of X-ray refraction techniques.

Dipl.-Phys. Axel Lange, born in 1948, studied Physics at Technical University Berlin (TUB), Germany, where he received his MSc After basic research in X-ray analysis of amorphous materials at Freie Universität Berlin, Germany, he became Research Associate at BAM, Berlin, where he developed all the basic testing equipment in founding the X-ray Topography Group. He is also the main inventor of the iterative CT algorithm DIRECTT.

Prof. Dr. rer. nat. Manfred P. Hentschel, born in 1943, studied Physics at Freie Universität Berlin, Germany, where he received his PhD in 1981. His postdoctoral activities focused on X-ray and neutron scattering of biomembranes and polymers. Since 1987, new X-ray topography techniques for nondestructive characterization of advanced materials have been developed and applied under his leadership until his retirement from BAM in 2008. Now, he engages in industrial consulting and lecturing at TUB.

Dr. rer. nat. habil. Gerd-Rüdiger Jaenisch, born in 1963, studied Physics at the Dresden University of Technology, Germany. In 1992, he received his PhD in theoretical nuclear physics. Since 1992, he has been working at BAM on modeling and 3D data reconstruction in NDT. In 2001, he finished his habilitation at the Dresden University of Technology, in the field of material sciences and since 2002 he has been lecturer in the Faculty of Mechanical Science and Engineering. Currently, he works on radiological models and algorithms in the division “Radiological Methods” at BAM.

Dr. rer. nat. Nikolay Kardjilov is responsible for the neutron tomography instrument CONRAD at Helmholtz Centre Berlin (HZB) for Materials and Energy, Germany. He studied Physics at Sofia University, Bulgaria, where he received his MSc degree. Thereafter, he completed his PhD work in the field of neutron tomography at the Department of Physical Science at TU Munich, Germany. In 2003, he moved to HZB, where he set up a new neutron tomography instrument. His research topics focus on the development and application of radiographic and tomographic techniques with neutrons.

Dr. rer. nat. Christian Tötzke studied energy and process engineering at the TUB, Germany. After receiving the doctoral degree from the FU Berlin in 2009, he joined the imaging group at the HZB where he analyzed the water transport in fuel cell materials. In 2014, he took up a post-doc position at the University of Potsdam, Germany. His present research focuses on the visualization of water and nutrient uptake by plant roots.

Dr. rer. nat. Henning Markötter has a post-doc position at the TUB, Germany, where he studied Physics from 2002 until 2007, and worked there afterwards in the “Optical Technologies Group” on a holographic data storage system. Since 2010, he has joined the “Imaging Group” at HZB. Since 2013, he has been working on his PhD thesis in the field of water transport processes in PEM fuel cell materials.

Dr.-Ing. Andre Hilger is responsible for the synchrotron and neutron tomography facilities and the 3D data analysis center at the Helmholtz-Zentrum Berlin (HZB), Germany. He studied Technical Physics at the University of Applied Science (TFH) Berlin, Germany. After receiving his bachelor degree he worked as a technician at HZB as well as at TFH between 2001 and 2006. In 2006, he obtained his MSc degree from TFH. In 2009, he completed his PhD thesis in materials science. Up to now, he is a post-doc at HZB.

Dr. rer. nat. Ingo Manke is Head of the Imaging Group at HZB, Germany. He studied Physics at the Freie Universität Berlin, Germany and completed his PhD thesis at TUB, Germany, in the field of scanning nearfield microscopy. Later he worked at Fraunhofer Institute for Reliability and Microintegration. Since 2003, he has joined the HZB with research interests in materials science and in the development and application of radiographic and tomographic techniques with neutrons and X-rays.

*

Revised version of the paper presented at the ECNDT Conference, Prague, 2014

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Published Online: 2015-11-18
Published in Print: 2015-11-16

© 2015, Carl Hanser Verlag, München

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. High-precision deformation and damage development assessment of composite materials by high-speed camera, high-frequency impulse and digital image correlation techniques
  5. Effect of homogenization heat treatment on toughness and wear resistance of plastic mold steel
  6. Influence of repeated tempering on the machinability and microstructure of an AISI 52100 steel
  7. Effects of burnishing parameters on the quality and microhardness of flat die surfaces
  8. Newly revealed features of fracture toughness behavior of spot welded dual phase steel sheets for automotive bodies
  9. Milling behavior of Hadfield steel with cryogenically treated tungsten carbide inserts
  10. Consideration of hydrogen transport in press-hardened 22MnB5
  11. X-ray Compton line scan tomography*
  12. Influences of pin profile on the macrostructure and mechanical properties of friction stir welded AA6061-T6 alloy T-joints
  13. Influence of strontium addition on the wear behavior of Mg-3Al-3Sn alloys produced by gravity casting
  14. Synthesis and characterization of graphene-epoxy nanocomposites
  15. Processing of Saudi talc ore for filler industries – Part 2: Magnetic separation and flotation
  16. Kalender/Calendar
  17. Kalender
https://doi.org/10.3139/120.110799

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. High-precision deformation and damage development assessment of composite materials by high-speed camera, high-frequency impulse and digital image correlation techniques
  5. Effect of homogenization heat treatment on toughness and wear resistance of plastic mold steel
  6. Influence of repeated tempering on the machinability and microstructure of an AISI 52100 steel
  7. Effects of burnishing parameters on the quality and microhardness of flat die surfaces
  8. Newly revealed features of fracture toughness behavior of spot welded dual phase steel sheets for automotive bodies
  9. Milling behavior of Hadfield steel with cryogenically treated tungsten carbide inserts
  10. Consideration of hydrogen transport in press-hardened 22MnB5
  11. X-ray Compton line scan tomography*
  12. Influences of pin profile on the macrostructure and mechanical properties of friction stir welded AA6061-T6 alloy T-joints
  13. Influence of strontium addition on the wear behavior of Mg-3Al-3Sn alloys produced by gravity casting
  14. Synthesis and characterization of graphene-epoxy nanocomposites
  15. Processing of Saudi talc ore for filler industries – Part 2: Magnetic separation and flotation
  16. Kalender/Calendar
  17. Kalender
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