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Environmental Geology

, Volume 46, Issue 3–4, pp 486–492 | Cite as

The use of neutrons and monochromatic X-rays for non-destructive testing in geological materials

  • B. MasschaeleEmail author
  • M. Dierick
  • L. Van Hoorebeke
  • V. Cnudde
  • P. Jacobs
Original Article

Abstract

In the paper we present our results for element sensitive high-energy X-ray tomography and high-speed thermal neutron tomography applied to geological samples. The tuneable monochromatic X-ray beam was used for element sensitive tomography of geological samples containing heavy elements using the K-edge dichromatic scanning technique. This type of NDT (non-destructive testing) allowed us to reveal the quantity and location of uranium, lead and mercury in Oklo samples (natural nuclear reactor) and Cinnabar stones. Fast 3-D thermal neutron imaging of dynamical processes was successfully tested at the high flux neutron tomography station of the ILL. The qualitative investigation of water repellents and consolidants applied on sandstones of Bray and limestones of Maastricht were the first samples to be studied with the new imaging technique.

Keywords

Monochromatic X-rays Neutrons Tomography 

References

  1. Baechler S, Materna T, Jolie J, Cauwels P, Crittin M, Honkimaki V, Johner HU, Masschaele B, Mondelaers W, Kern J, Piboule M (2001) Non-destructive analysis of a bulky sample from a natural fossil reactor. J Radioanal Nucl Chem 250:39Google Scholar
  2. Bonse U, Johnson Q, Nichols M, Nußhardt R, Krasnicki S, Kinney J (1986) High resolution tomography with chemical specificity, Nucl Instrum Methods A246:644–648Google Scholar
  3. Dierick M, Masschaele B (2002) Advanced filtered back projection algorithms. Proc World Conference on Neutron Radiography (WNCR-7)Google Scholar
  4. Hounsfield GN (1973) Computerized transverse axial scanning (tomography), 1, description of system. Brit J Radiol 46:1016–1022PubMedGoogle Scholar
  5. Jasti JK, Fogler HS (1992) Application of neutron radiography to image flow phenomena in porous media. AIChE J 38:481–488Google Scholar
  6. Jolie J, Materna T, Masschaele B, Mondelaers W, Honkimaki V, Koch A, Tschentscher T (1999) Heavy element sensitive tomography using synchrotron radiation above 100 keV. Speciation, Techniques and Facilities for Radioactive Materials at Synchrotron Light Sources Eds. Nuclear Energy Agency, 249Google Scholar
  7. Lehmann EH, Vontobel P, Wiezel L (1999) Properties of the radiography facility NEUTRA at SINQ and its potential for use as European reference facility. Proc 6th World Conf on Neutron Radiography, OsakaGoogle Scholar
  8. Masschaele B, Beachler S, Cauwels P, Cloetens P, Dierick M, Jolie J, Mondelaers W (2001a) Element sensitive tomography for the determination of the metal diffusion in teeth with amalgam fillings. Radiat Phys Chem 61:625–626CrossRefGoogle Scholar
  9. Masschaele B, Beachler S, Cauwels P, Dierick M, Jolie J, Mondelaers W (2001b) First results of micro-tomography by use of a focusing neutron lens. Radiat Phys Chem 61:623–624CrossRefGoogle Scholar
  10. Masschaele B (2002) The use of monochromatic X-rays and cold neutrons for tomography. PhD Thesis, Ghent UniversityGoogle Scholar
  11. Materna T, Jolie J, Mondelaers W, Masschaele B, Honkimaki V, Koch A, Tschentscher T (1999) Uranium sensitive tomographies with synchrotron radiation. J Synchrotron Radiat 6:1059–1064CrossRefGoogle Scholar
  12. Pel L, Ketelaars AAJ, Adan OCG, van Well AA (1993) Determination of moisture diffusivity in porous media using scanning neutron radiography. Int J Heat Mass Transfer 36:1261–1267Google Scholar
  13. Prazak J, Tywoniak J, Peterka F, Slonc T (1990) Description of transport of liquid in porous media — a study based on neutron radiography data. Int J Heat Mass Transfer 33:1105–1120CrossRefGoogle Scholar
  14. Rau C, Weitkamp T, Snigirev A, Schroer CG, Tümmler J, Lengeler B (2001) Recent developments in hard X-ray tomography. Nucl Instr Meth A 467–468:929–931Google Scholar
  15. Smellie J (1995) The fossil nuclear reactors of Oklo, Gabon. Radwaste Magazine, Special Series on Natural Analogs, March 1995:21Google Scholar
  16. Young ME, Murray M, Cordiner P (1999) Stone consolidants and chemical treatments in Scotland. Report to Historic ScotlandGoogle Scholar

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • B. Masschaele
    • 1
    Email author
  • M. Dierick
    • 1
  • L. Van Hoorebeke
    • 1
  • V. Cnudde
    • 2
  • P. Jacobs
    • 2
  1. 1.Department of Subatomic and Radiation PhysicsGhent University9000 GentBelgium
  2. 2.Department of Geology and Soil ScienceGhent University9000 GentBelgium

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