X-ray micro-CT and neutron CT as complementary imaging tools for non-destructive 3D imaging of rare silicified fossil plants

0482812 - ÚTAM 2018 RIV GB eng J - Článek v odborném periodiku
Karch, J. - Dudák, J. - Žemlička, J. - Vavřík, Daniel - Kumpová, Ivana - Kvaček, J. - Heřmanová, Z. - Šoltés, J. - Viererbl, L. - Morgano, M. - Kaestner, A. - Trtík, P.
X-ray micro-CT and neutron CT as complementary imaging tools for non-destructive 3D imaging of rare silicified fossil plants.
Journal of Instrumentation. Roč. 12, December (2017), č. článku C12004. ISSN 1748-0221. E-ISSN 1748-0221
Grant CEP: GA MŠMT(CZ) LO1219
Klíčová slova: inspection with neutrons * X-ray detectors * X ray radiography
Obor OECD: Paleontology
Impakt faktor: 1.258, rok: 2017
http://iopscience.iop.org/article/10.1088/1748-0221/12/12/C12004/pdf

Computed tomography provides 3D information of inner structures of investigated objects. The obtained information is, however, strongly dependent on the used radiation type. It is known that as X-rays interact with electron cloud and neutrons with atomic nucleus, the obtained data often provide different contrast of sample structures. In this work we present a set of comparative radiographic and CT measurements of rare fossil plant samples using X-rays and thermal neutrons. The X-ray measurements were performed using large area photon counting detectors Timepix at IEAP CTU in Prague and Perkin Elmer flat-panel detector at Center of Excellence Telc. The neutron CT measurement was carried out at Paul Scherrer Institute using BOA beam-line. Furthermore, neutron radiography of fossil samples, provided by National Museum, were performed using a large-area Timepix detector with a neutron-sensitive converting 6LiF layer at Research Centre Rez, Czech Republic. The obtained results show different capabilities of both imaging approaches. While X-ray micro-CT provides very high resolution and enables visualization of fine cracks or small cavities in the samples neutron imaging provides high contrast of morphological structures of fossil plant samples, where X-ray imaging provides insufficient contrast
Trvalý link: http://hdl.handle.net/11104/0278214