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X-ray compton tomography

  • The potentials of incoherent X-ray Scattering (Compton) tomography are investigated. Imaging materials of very different density or atomic number at once is a perpetual challenge for X-ray tomography or radiography, in general. In a basic laboratory set-up for simultaneous perpendicular Compton Scattering and direct beam attenuation tomographic scans are conducted by single channel photon counting. This results in asymmetric distortions of the projection profiles of the scattering CT-data set. ln 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. Compärison to neutron tomography reveals astonishing similarities except for the glass component (without hydrogen). Therefore, ComptonThe potentials of incoherent X-ray Scattering (Compton) tomography are investigated. Imaging materials of very different density or atomic number at once is a perpetual challenge for X-ray tomography or radiography, in general. In a basic laboratory set-up for simultaneous perpendicular Compton Scattering and direct beam attenuation tomographic scans are conducted by single channel photon counting. This results in asymmetric distortions of the projection profiles of the scattering CT-data set. ln 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. Compärison to neutron tomography reveals astonishing similarities except for the glass component (without hydrogen). Therefore, Compton CT bears the potential to replace neutron tomography, which requires much more efforts.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Axel Lange, Manfred P. Hentschel, Andreas Kupsch, Gerd-Rüdiger Jaenisch, N. Kardjilov, C. Tötzke, H. Markötter, A. Hilger, I. Manke
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):ECNDT 2014 - 11th European conference on non-destructive testing (Proceedings)
Jahr der Erstveröffentlichung:2014
Organisationseinheit der BAM:8 Zerstörungsfreie Prüfung
8 Zerstörungsfreie Prüfung / 8.3 Radiologische Verfahren
8 Zerstörungsfreie Prüfung / 8.5 Mikro-ZfP
Herausgeber (Institution):Brno University of Technology
Erste Seite:1
Letzte Seite:9
Freie Schlagwörter:Computed tomography; Neutron tomography; X-ray compton scattering
Veranstaltung:ECNDT 2014 - 11th European conference on non-destructive testing
Veranstaltungsort:Prague, Czech Republic
Beginndatum der Veranstaltung:06.10.2014
Enddatum der Veranstaltung:10.10.2014
ISBN:978-80-214-5018-9
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:17.11.2014