About: Quantification of the neutron dark-field imaging signal in grating interferometry

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Here we report on a mathematical description for the neutron dark-field image (DFI) contrast based on the influence of the thickness-dependent beam broadening caused by scattering interactions and multiple refraction in the sample.We conduct radiography experiments to verify that the DFI signal exponentially decays as a function of thickness for both magnetic and nonmagnetic materials. Here we introduce a material-dependent parameter, the so-called linear diffusion coefficient . This allows us to perform a quantitative DFI-computed tomography. Additionally, we conduct correlative small-angle neutron-scattering experiments and validate the mathematical assumption that the angular broadening of the direct beam is proportional to the square root of the number of discrete layers. Here we report on a mathematical description for the neutron dark-field image (DFI) contrast based on the influence of the thickness-dependent beam broadening caused by scattering interactions and multiple refraction in the sample.We conduct radiography experiments to verify that the DFI signal exponentially decays as a function of thickness for both magnetic and nonmagnetic materials. Here we introduce a material-dependent parameter, the so-called linear diffusion coefficient . This allows us to perform a quantitative DFI-computed tomography. Additionally, we conduct correlative small-angle neutron-scattering experiments and validate the mathematical assumption that the angular broadening of the direct beam is proportional to the square root of the number of discrete layers. (en)
Title	Quantification of the neutron dark-field imaging signal in grating interferometry Quantification of the neutron dark-field imaging signal in grating interferometry (en)
skos:prefLabel	Quantification of the neutron dark-field imaging signal in grating interferometry Quantification of the neutron dark-field imaging signal in grating interferometry (en)
skos:notation	RIV/68378271:_____/12:00396487!RIV14-AV0-68378271
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kopeček, Jaromír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	163791
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/12:00396487
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	neutron scattering (including small-angle scattering); atom and neutron interferometry (en)
http://linked.open.../riv/klicoveSlovo	atom and neutron interferometry neutron scattering (including small-angle scattering)
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[DF23ADE5F368]
http://linked.open...i/riv/nazevZdroje	Physical Review. B
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	12 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	88
http://linked.open...iv/tvurceVysledku	Betz, B. Kopeček, Jaromír Gasser, U. Bunk, O. David, C. Donath, T. Grünzweig, C. Jefimovs, K. Kaestner, A. Kohlbrecher, J. Lehmann, E. Pfeiffer, F.
http://linked.open...ain/vavai/riv/wos	000323944800002
issn	1098-0121
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevB.88.125104

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