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Methoden und Instrumentierung Vortrag: Do., 11:10–11:30 D-V38
Neutron Tomography: Status Quo and Future Developments
Wolfgang Treimer 1,2 , Markus Strobl 1,2 , Nikolay Kardjilov 2 , Andre
Hilger 1,2 , Ingo Manke 2,3
1 University of Applied Sciences (TFH), FB II, 13353 Berlin – 2 Hahn Meitner Institut,
SF3, 14106 Berlin – 3 Technical University Berlin, 10623 Berlin
Fig. 1: 3D reconstruction
of a part of
a vent tube with sediments,
monochromatic
neutrons l=0.528nm
In the last decade neutron tomography has become an impor-
tant part in neutron physics due to a number of applications in
material research, non-destructive testing, material design, material
testing, archeology, biological systems, imaging of rapid
processes, etc. The main developing work on this subject was
done by improving geometry, spatial resolution, szintillator materials
and detectors, based on the main imaging contrast of
attenuation of neutrons by materials. Experimental conditions,
small or large samples, low or high absorbing materials, possible
activation of parts of the sample, etc., demand very often
different techniques or imaging signals, which are not based on
attenuation contrast. In the last few years a number new imaging
signals such as time resolved CT, energy dispersive contrast
CT, phase contrast CT, refraction contrast CT (which is topological
also a phase contrast), small angle scattering contrast
CT , CT with monochromatic neutrons were investigated and
carefully proved to be suited for neutron tomography [1] [6].(see
Fig.1). Other, new techniques will be developed and applied
to condensed matter physics. The wave nature and the spin of
the neutron will bring further CT- techniques such as Fourier-
CT and polarized neutron CT , which will enlarge the field of
application of n-Ct [7], [8]. The future of neutron tomography,
however, will belong to such new techniques and therefore interact with neutron scattering
(as well as x-ray scattering ) methods in a very sustainable and fruitful way.
[1] W. Treimer, et al, Appl. Phys. Lett. (2003) 83, 2 [2] M. Strobl, et al, Physica
B (2004) 350, 155-158 [3] M. Strobl, et al, Appl. Phys. Lett. (2004) 85 [4] W.
Treimer, et al, IEEE (2005) 52, 1 [5] N. Kardjilov, et al Nucl. Instr. Meth. A (2005)
542 ,16 [6] M. Strobl et al, Nucl. Instr. Meth. A (2005) 542 383 [7] W. Treimer et
al , Nucl. Instr. Meth. A (2005) 542 367 [8] W. Treimer, et al, Applied Solid State
Physics, (2005) Vol 45, 407