N. A. Grigoryeva, N. A. Kovalenko, S. V. Grigoriev
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引用次数: 0
Abstract
Two types of polarized neutron reflectometers have been simulated for the compact neutron source DARIA (Dedicated for Academical Research and Industrial Application), depending on the type of target assembly with thermal or cryogenic moderators. Modeling and optimization of reflectometers were carried out using McStas software package by the Monte Carlo method with specified momentum transfer resolution Δq/q ≤ 5% for reflection angles greater than the critical angle θcr and a neutron beam horizontal divergence of Δθ ≤ 0.1° for θ < θcr and Δθ ≤ 0.033° for θ > θcr. To reduce losses in neutrons, neutron guides with a supermirror coating have been proposed. A system of choppers makes it possible to create a neutron spectrum of the required width on a sample.
期刊介绍：
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques publishes original articles on the topical problems of solid-state physics, materials science, experimental techniques, condensed media, nanostructures, surfaces of thin films, and phase boundaries: geometric and energetical structures of surfaces, the methods of computer simulations; physical and chemical properties and their changes upon radiation and other treatments; the methods of studies of films and surface layers of crystals (XRD, XPS, synchrotron radiation, neutron and electron diffraction, electron microscopic, scanning tunneling microscopic, atomic force microscopic studies, and other methods that provide data on the surfaces and thin films). Articles related to the methods and technics of structure studies are the focus of the journal. The journal accepts manuscripts of regular articles and reviews in English or Russian language from authors of all countries. All manuscripts are peer-reviewed.
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