Berlin 2005 – scientific programme

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M: Metallphysik

M 44: Symposium Tomographic Methods in Materials Research

M 44.3: Talk

Tuesday, March 8, 2005, 15:55–16:15, TU H1058

Special features of tomography with cold neutrons — •Nikolay Kardjilov¹, André Hilger^1,2, Ingo Manke^1,3, Markus Strobl^1,2, Wolfgang Treimer^1,2, and John Banhart¹ — ¹Hahn-Meitner-Institut, Glienicker Str. 100, 14109 Berlin — ²Technische Fachhochschule Berlin, Luxemburger Straße 10, 13353 Berlin — ³TU-Berlin, Straße der 17 Juni 135, 10623 Berlin

Cold neutrons interact stronger with most materials than thermal neutrons. Therefore the image contrast and the element detection sensitivity in tomography investigations can be improved by using cold neutrons. In contrast to neutron tomography with thermal neutrons, cold neutron tomography has its own specifics which should be taken into account in when processing experimental data. The influence of the Bragg-cut-off , beam hardening and spectral effects lead to a complicated image formation. Typical examples of cold neutron tomography experiments will be discussed and analyzed.