Skip to main content
Log in

Heavy-element tomography using tunable gamma-ray beams

  • Published:
Applied Physics A Aims and scope Submit manuscript

Abstract

Gamma-ray beams of which both the band-width and the energy can be tuned were used to perform tomographies. Samples containing heavy elements were rotated and translated in these beams, and the absorption of the beams for each position was measured. Different analysing methods were compared. In contrast to common tomography which uses a continuous spectrum, a technique relying on a monochromatic beam, and a second method which uses as signal the intensity ratio of two monochromatic beams passing through the sample; are presented. When the heavy element under study is present, with the second method the ratio becomes element sensitive if the two energies are such that one is just above and one just below theK-edge of the heavy element under study. An element-sensitive tomography is therefore possible. Different back-projection methods (iterative process, simple back-projection, convolution reconstruction method) were applied on the same data, and their results were compared.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. J. Jolie, M. Bertschy: Nucl. Instrum. Methods B95, 431 (1995)

    Google Scholar 

  2. M. Bertschy, J. Jolie, W. Mondelaers: Nucl. Instrum. Methods B95, 437 (1995)

    Google Scholar 

  3. M. Bertschy, M. Crittin, J. Jolie, N. Warr, W. Mondelaers: Nucl. Instrum. Methods B99, 286 (1995)

    Google Scholar 

  4. M. Bertschy, M. Crittin, J. Jolie, W. Mondelaers, N. Warr: Nucl. Instrum. Methods B103, 330 (1995)

    Google Scholar 

  5. W. Thomlinson, N. Gmür, D. Chapman, R. Garrett, N. Lazarz, H. Moulin, A.C. Thompson, H.D. Zeman, G.S. Brown, J. Morrison, P. Reiser, V. Padmanabahn, L. Ong, S. Green, J. Giacomini, H. Gordon, E. Rubinstein: Rev. Sci. Instrum.63, 625 (1992)

    Google Scholar 

  6. J.H. Hubbell: Nat. Stand. Ref. Data. Ser., Nat. Bur. Stand. (US)29 (1969)

  7. N. Warr: ACQUI: An acquisition program forγ-ray detectors using LabVIEW®. Internal report IPF-PAN-8, University of Fribourg (1995)

  8. W.D. McDavid, R.G. Waggener, M.J. Dennis:Handbook of Medical Physics, Vol. II (CRC Boca Raton, FL, 1985) p. 37

    Google Scholar 

  9. G.T. Herman: Image Reconstruction from Projections (Academic, New York 1980)

    Google Scholar 

  10. A.C. Kak, M. Slaney:Principles of Computerized Tomographic Imaging (IEEE, New York 1987)

    Google Scholar 

  11. C.L. Fink, B.J. Micklich, T.J. Yule, P. Humm, L. Sagalovsky, M.M. Martin: Nucl. Instrum. Methods B99, 748 (1995)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bertschy, M., Jolie, J. & Mondelaers, W. Heavy-element tomography using tunable gamma-ray beams. Appl. Phys. A 62, 437–443 (1996). https://doi.org/10.1007/BF01567114

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01567114

PACS

Navigation