{"title":"Absorption and Scattering of Neutrons during Sub-Barrier Reflection from a Surface","authors":"Yu. V. Nikitenko","doi":"10.1134/S1027451024702264","DOIUrl":null,"url":null,"abstract":"<p>When studying the interaction of neutrons with a force field, the important parameters are the neutron flux and the time the neutron stays in the measuring setup. To increase them, a neutron accumulator generated by a pulsed or continuously acting source can be used. Both parameters in a storage ring with material walls are determined by the probabilities of neutron capture by atomic nuclei and diffuse neutron scattering on the surface roughness of the walls. The task of definition of probabilities of neutron capture and scattering processes in the mirror reflection channel is considered. An imaginary potential of neutron interaction with the medium is introduced, which is responsible for the diffuse scattering of neutrons. Requirements for the wall roughness of the neutron storage ring are formulated.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S343 - S348"},"PeriodicalIF":0.5000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1027451024702264","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
When studying the interaction of neutrons with a force field, the important parameters are the neutron flux and the time the neutron stays in the measuring setup. To increase them, a neutron accumulator generated by a pulsed or continuously acting source can be used. Both parameters in a storage ring with material walls are determined by the probabilities of neutron capture by atomic nuclei and diffuse neutron scattering on the surface roughness of the walls. The task of definition of probabilities of neutron capture and scattering processes in the mirror reflection channel is considered. An imaginary potential of neutron interaction with the medium is introduced, which is responsible for the diffuse scattering of neutrons. Requirements for the wall roughness of the neutron storage ring are formulated.
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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