Neutron spin phase imaging

Piegsa, F. M.; Brandt, B. van den; Hautle, P.; Konter, J.A.

doi:10.1016/j.nima.2007.11.032

Cited by 23 publications

(7 citation statements)

References 75 publications

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“…Neutrons are highly sensitive to magnetic fields due to their intrinsic magnetic moment. [5][6][7][8][9][10][11][12][13][14][15][16][17] The information yield by neutrons and X-rays is thus complementary as neutrons are relatively insensitive to most metals, but can be used to detect small amounts of many light elements, including hydrogen, boron, and lithium. These properties make neutrons ideal for applications in a wide range of scientific and industrial applications.…”

Section: Experimental Techniques and Facilitiesmentioning

confidence: 99%

Investigation of Energy‐Relevant Materials with Synchrotron X‐Rays and Neutrons

et al. 2011

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Many materials used for energy conversion have a complex structure and chemical composition, knowledge of which is important for both understanding the function of materials and energy conversion systems and for their further development. Synchrotron radiation and neutrons can make an important contribution to understanding the function of such systems. Taking examples from the fields of fuel cells, gas separation membranes, batteries, solar cells, and catalysts, the use of radiography, tomography, diffraction, scattering, and absorption edge spectroscopy is demonstrated. The strength of such methods is the in situ characterization of processes and compositions, and so the focus is on these aspects.

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Section: Experimental Techniques and Facilitiesmentioning

confidence: 99%

Investigation of Energy‐Relevant Materials with Synchrotron X‐Rays and Neutrons

et al. 2011

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“…curve-fitting or interpretation of scattering data, is becoming more and more important. Examples of such applications encompass for instance polarized neutron radiography [5,6,7,8,9,10,11,12] and various novel techniques with an explicit overlap of neutron scattering and radiography, e.g. grating interferometry or multiple small angle neutron scattering etc.…”

Section: Introductionmentioning

confidence: 99%

Statistical uncertainty in quantitative neutron radiography

Piegsa

Kaestner

Antognini

et al. 2017

Eur. Phys. J. Appl. Phys.

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We demonstrate a novel procedure to calibrate neutron detection systems commonly used in standard neutron radiography. This calibration allows determining the uncertainties due to Poisson-like neutron counting statistics for each individual pixel of a radiographic image. The obtained statistical errors are necessary in order to perform a correct quantitative analysis. This fast and convenient method is applied to data measured at the cold neutron radiography facility ICON at the Paul Scherrer Institute. Moreover, from the results the effective neutron flux at the beam line is determined.

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“…The unique ability of neutrons to penetrate materials opaque to other types of radiation, combined with their ability to interact with a magnetic field through the neutron spin precession, makes neutrons an excellent probe for remotely studying magnetic field distributions, even internally within solid objects. Various techniques utilizing polarized neutrons have been developed for the spatially resolved investigation of magnetic fields [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. One of these techniques correlates the variation of neutron intensity with the magnetic field strength and direction, allowing effective magnetic field imaging [2,3,[5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…One of these techniques correlates the variation of neutron intensity with the magnetic field strength and direction, allowing effective magnetic field imaging [2,3,[5][6][7][8][9][10]. Also interferometric and diffraction methods have been available for a number of years, where the dependence of the real part of the refractive index on the magnetic field strength can be exploited [1,4,11,12] including methods utilizing spin echo [13,14]. However the latter techniques operate with neutron beams of low intensity caused by all the necessary beam conditioning, and further, some of them require spatial scanning through the sample, and therefore provide very limited imaging statistics, but with the tradeoff of providing very good spatial resolution.…”

Section: Introductionmentioning

confidence: 99%