IEAP - Institute of Experimental and Applied Physics

Partial tasks > Neutron radiography

Neutron radiography

The principle of neutron transmission radiography is identical to X-ray radiography: the intensity of neutron beam is attenuated by the object material and then recorded by a neutron sensitive imaging detector. Thanks to different values of neutron and X-ray attenuation coefficients in matter, neutron radiography can visualize structures which can be hardly distinguished with X-rays (e.g. light elements such as Hydrogen or Carbon in plastic or biological samples).

Adapting a pixel detector (Medipix) for detection of slow neutrons requires the use of a suitable neutron converter material. Converter material captures slow neutrons and produces secondary radiation which can be detected by the sensor chip. The range of secondary radiation in the sensor should be short to conserve high spatial resolution. Materials containing 6Li or 10B are well suited from this point of view as they convert neutrons to heavy charged particles.

Responsible person

Jakůbek Jan

IEAP

Co-workers

Pospíšil Stanislav	IEAP
Vavřík Daniel	IEAP

Grants:

Number	Name	Agency
LC06041	Research center "Fabrication, modification and characterization of materials by energetic radiation"	MŠMT
MSM 6840770040	Research Program 40: Usage of radionuclides and ionizing radiation.	MŠMT

Articles in Impacted Journals
(19)

Articles in Conference Proceedings
(7)

Thesis
(0)

Other publications
(4)

All
(30)

Table format

F. Krejčí, M. Slavíková, J. Žemlička, J. Jakůbek, P. Kotlík, "High-contrast X-ray Radiography Using Hybrid Semiconductor Pixel Detectors with 1 mm thick Si sensor as a Tool for Monitoring Liquids in Natural Building", Journal of Instrumentation 9 C07014 (2014)

D. Vavřík, M. Holík, J. Jakůbek, M. Jakůbek, V. Kraus, F. Krejčí, P. Soukup, D. Tureček, J. Vacík, J. Žemlička, "Modular pixelated detector system with the spectroscopic capability and fast parallel read-out ", Journal of Instrumentation 9 C06006 (2014)

M. Slavíková, F. Krejčí, P. Kotlík, J. Jakůbek, I. Tomandl, J. Vacík, "Neutron and high-contrast X-ray micro-radiography as complementary tools for monitoring organosilicon consolidants in natural building stones", Nucl. Instr. Methods B: Beam Interactions with Materials and Atoms 338, 42-47 (2014)

P. Mikula, M. Vrana, J. Saroun, F. Krejčí, . et. al., "Some properties of the neutron monochromatic beams obtained by multiple Bragg reflections realized in bent perfect single crystals", Applied Crystallography 46, 128-134 (2013)

P. Soukup, J. Jakůbek, Z. Vykydal, "3D sensitive voxel detector of ionizing radiation based on Timepix device", Journal of Instrumentation 6 C01060, doi: 10.1088/1748-0221/6/01/C01060 (2011)

T. Nguyen, D. Vavřík, E. Lehmann, I. Jeon, "Neutron Analysis for Microvoids in an Adhesive Layer between High X-ray Attenuation Materials", Appl. Phys. Express 4 (2011) 066401

D. Tureček, T. Holý, J. Jakůbek, S. Pospíšil, Z. Vykydal, "Pixelman: a multi-platform data acquisition and processing software package for Medipix2, Timepix and Medipix3 detectors ", Journal of Instrumentation 6 C01046, doi: 10.1088/1748-0221/6/01/C01046 (2011)

J. Jakůbek, P. Schmidt-Wellenburg, P. Geltenbort, M. Platkevič, C. Plonka-Spehr, J. Šolc, T. Soldner, "A coated pixel device TimePix with micron spatial resolution for UCN detection", NIM A, Vol. 600, Issue 3, p. 651-656 (2009)

J. Jakůbek, M. Platkevič, P. Schmidt-Wellenburg, P. Geltenbort, C. Plonka-Spehr, M. Daum, "Position-sensitive spectroscopy of ultra-cold neutrons with Timepix pixel detector", NIM A, Vol. 607, Issue 1, p. 45-47 (2009)

J. Jakůbek, "Semiconductor Pixel Detectors and their Applications in Life Sciences", 2009 JINST 4 P03013 doi:10.1088/1748-0221/4/03/P03013

J. Uher, J. Jakůbek, L. Celine, L. Claude, S. Pospíšil, R. Škoda, Z. Vykydal, "Detection of fast neutrons with the Medipix-2 pixel detector", Nucl. Instr. and Meth. A, Volume: 591, Issue:1, Pages: 71-74, doi: 10.1016/j.nima.2008.03.027

J. Uher, J. Jakůbek, Z. Kohout, V. Linhart, S. Pospíšil, C. Fröjd, S. Petersson, C. Kenney, S. Parker, G. Thungstrom, "Characterization of 3D thermal neutron semiconductor detectors", NIM A 576 (2007) 32-37

J. Jakůbek, "Data processing and image reconstruction methods for pixel detectors", NIM A 576 (2007) 223-234, doi:10.1016/j.nima.2007.01.157

J. Jakůbek, G. Mettivier, M. Montesi, S. Pospíšil, P. Russo, "CdTe Hybrid Pixel Detector for Imaging with Thermal Neutrons", NIM A Vol. 563, pages 238-241 (2006)

J. Jakůbek, C. Granja, T. Holý, E. Lehmann, V. Linhart, S. Pospíšil, V. Rypar, J. Uher, J. Vacík, D. Vavřík, Z. Vykydal, M. Cevallos, "Neutron imaging and tomography with Medipix2 and dental microroentgenography", Nucl. Instr. and Meth. A, Volume: 569, Issue 2, Pages: 205-209, doi: 10.1016/j.nima.2006.08.043

J. Uher, T. Holý, J. Jakůbek, E. Lehmann, S. Pospíšil, J. Vacík, "Performance of Slow Neutron Pixel Detector", NIM A Vol. 542, pages 283-287 (2005)

J. Jakůbek, T. Holý, S. Pospíšil, J. Uher, D. Vavřík, "Spatial Resolution of the Medipix-2 as Neutron Pixel Detector", NIM A Vol. 546, pages 164-169 (2005)

J. Jakůbek, T. Holý, S. Pospíšil, J. Uher, D. Vavřík, "Properties of the single neutron pixel detector based on the Medipix-1 device", NIM A Vol. 531, pages 276-284 (2004)