Examples of magnetic material studies using polarized polychromatic neutrons
نویسندگان
چکیده
منابع مشابه
SUSANS With Polarized Neutrons
Super Ultra-Small Angle Neutron Scattering (SUSANS) studies over wave vector transfers of 10(-4) nm(-1) to 10(-3) nm(-1) afford information on micrometer-size agglomerates in samples. Using a right-angled magnetic air prism, we have achieved a separation of ≈10 arcsec between ≈2 arcsec wide up- and down-spin peaks of 0.54 nm neutrons. The SUSANS instrument has thus been equipped with the polari...
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Neutrons have zero net electrical charge and can thus penetrate deeply into matter, but their intrinsic magnetic moment makes them highly sensitive to magnetic fields. These properties have been combined with radiographic (2D) and tomographic (3D) imaging methods to provide a unique technique to probe macroscopic magnetic phenomena both within and around bulk matter. Based on the spin-rotation ...
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15 صفحه اولMagnetic Diffuse Scattering Measurements Using Polarised Neutrons
Two distinct polarised neutron techniques are applicable to the. study of magnetic diffuse scattering. The first, used for ferromagnetic alloys, employs a polarised incident beam without analysis of the outgoing polarisation. This method has been widely used, chiefly by the Oak Ridge group, to study moment disturbances in ferromagnetic binary transition metal alloys. The second technique involv...
متن کاملInverse beta-decay of arbitrarily polarized neutrons in a magnetic field
We calculate the cross section of the inverse beta decay process, νe + n → p + e, in a background magnetic field which is much smaller than m p /e. Using exact solutions of the Dirac equation in a constant magnetic field, we find the cross section for arbitrary polarization of the initial neutrons. The cross section depends on the direction of the incident neutrino even when the initial neutron...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2007
ISSN: 0108-7673
DOI: 10.1107/s0108767307094093