Porosity effects on the neutron total cross section of graphite

Petriw, S.; Dawidowski, J.; Santisteban, J.R.

doi:10.1016/j.jnucmat.2009.11.003

Cited by 12 publications

(15 citation statements)

References 16 publications

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“…Although the normalization is not the same, the pattern of the sample diffracted structure is reproduced in both cases. The typical decreases in intensity which refer to the particular diffractions of the lattice space are in agreement with literature [144].…”

Section: Bnc Tests: Bragg-edge Transmission On Graphite Samplesupporting

confidence: 91%

Development and characterization of detectors for large area application in neutron scattering and small area application in neutron reflectometry

Mauri

2019

Preprint

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Section: Bnc Tests: Bragg-edge Transmission On Graphite Samplesupporting

confidence: 91%

Development and characterization of detectors for large area application in neutron scattering and small area application in neutron reflectometry

Mauri

2019

Preprint

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“…Incidentally, note that there are also small portions of magnetic Bragg scattering component [12,13] and small-angle scattering component [14,15] in the coherent elastic scattering, actually.…”

Section: Neutron Transmission and Total Cross-sectionmentioning

confidence: 99%

Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Sato

2017

J. Imaging

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Current status of Bragg-edge/dip neutron transmission analysis/imaging methods is presented. The method can visualize real-space distributions of bulk crystallographic information in a crystalline material over a large area (~10 cm) with high spatial resolution (~100 µm). Furthermore, by using suitable spectrum analysis methods for wavelength-dependent neutron transmission data, quantitative visualization of the crystallographic information can be achieved. For example, crystallographic texture imaging, crystallite size imaging and crystalline phase imaging with texture/extinction corrections are carried out by the Rietveld-type (wide wavelength bandwidth) profile fitting analysis code, RITS (Rietveld Imaging of Transmission Spectra). By using the single Bragg-edge analysis mode of RITS, evaluations of crystal lattice plane spacing (d-spacing) relating to macro-strain and d-spacing distribution's FWHM (full width at half maximum) relating to micro-strain can be achieved. Macro-strain tomography is performed by a new conceptual CT (computed tomography) image reconstruction algorithm, the tensor CT method. Crystalline grains and their orientations are visualized by a fast determination method of grain orientation for Bragg-dip neutron transmission spectrum. In this paper, these imaging examples with the spectrum analysis methods and the reliabilities evaluated by optical/electron microscope and X-ray/neutron diffraction, are presented. In addition, the status at compact accelerator driven pulsed neutron sources is also presented.

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“…This also allows the potential for SANS imaging using a twodimensional transmission monitor. Although a concept similar to ESANS has been presented previously (Petriw et al, 2010;Galvá n Josa et al, 2015), its analyses were insufficient for practical experiments, since the acceptance angle of the transmission monitor was not considered. Our analysis provides a quantitative explanation for the experimentally observed neutron attenuation spectrum and is demonstrated here for steel.…”

Section: Introductionmentioning

confidence: 99%

Energy-resolved small-angle neutron scattering from steel

et al. 2017

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Recent progress of pulsed neutron sources has enabled energy‐resolved analysis of neutron attenuation spectra, which include information on neutron scattering. In this study, a new analysis technique for small‐angle neutron scattering (SANS) is demonstrated. A clear difference is observed in the neutron attenuation spectra between steels with different nanostructures; this difference can be understood as arising from attenuation due to SANS. The neutron attenuation spectra calculated from the corresponding SANS profiles agree well with the experimentally observed attenuation spectra. This result indicates that measurement of neutron attenuation spectra may enable the development of a novel experimental technique, i.e. energy‐resolved SANS.

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Porosity effects on the neutron total cross section of graphite

Cited by 12 publications

References 16 publications

Development and characterization of detectors for large area application in neutron scattering and small area application in neutron reflectometry

Development and characterization of detectors for large area application in neutron scattering and small area application in neutron reflectometry

Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Energy-resolved small-angle neutron scattering from steel

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