Publication:
Graphite intercalation compound (GIC) crystal monochromators for cold neutron instruments: Characterization of KC24by time-of-flight neutron diffraction

Дата
2021
Авторы
Dennison, A. J. C.
Devishvili, A.
Gutfreund, P.
Cubitt, R.
Wolff, M.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
OrgUnit Logo
Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
© 2021 Author(s).Graphite intercalation compounds (GICs) are a group of layered materials that are suitable as monochromators for cold neutrons. KC24 is a particularly interesting compound in this regard as it features a large c-axis lattice spacing of 8.74 Å, high reflectivity, and the possibility to produce large crystals with mosaicity that matches the beam divergence of cold neutron guides. GICs can be synthesized with different levels of intercalation, known as the stage of the compounds. Each stage displays a specific d-spacing. Impure GIC-monochromators containing multiple stages produce mixing of neutron wavelengths, which complicates data analysis on neutron reflectometers. We discuss the implications of GIC crystal purity and stage contamination for neutron reflectometry and show how GIC crystals can be characterized by time-of-flight neutron diffraction providing an efficient and quantifiable measure of the reflected wavelength spectrum. This allows taking into account multiple wavelength contaminations and ascertains the robustness of reflectometry measurements.
Описание
Ключевые слова
Цитирование
Graphite intercalation compound (GIC) crystal monochromators for cold neutron instruments: Characterization of KC24by time-of-flight neutron diffraction / Dennison, A.J.C. [et al.] // Review of Scientific Instruments. - 2021. - 92. - № 2. - 10.1063/5.0041248
URI
https://www.doi.org/10.1063/5.0041248
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85101765648&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000630500600002
 https://openrepository.mephi.ru/handle/123456789/23739
Коллекции
Публикации