A Two-Mode Time-of-Flight Neutron Reflectometer for a Compact Neutron Source DARIA

V. G. Syromyatnikov; Сыромятников В. Г.; N. A. Grigoryeva; Григорьева Н. А.; S. V. Grigoriev; Григорьев С. В.

doi:10.31857/S102809602307018X

A Two-Mode Time-of-Flight Neutron Reflectometer for a Compact Neutron Source DARIA

Authors: Syromyatnikov V.G.¹^,2, Grigoryeva N.A.², Grigoriev S.V.¹^,2
Affiliations:
1. Petersburg Nuclear Physics Institute, National Research Center “Kurchatov Institute”
2. St. Petersburg State University
Issue: No 7 (2023)
Pages: 93-101
Section: Articles
URL: https://rjsvd.com/1028-0960/article/view/664541
DOI: https://doi.org/10.31857/S102809602307018X
EDN: https://elibrary.ru/TEMOSE
ID: 664541

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Supplementary files
Statistics

Abstract

The concept of a two-mode neutron reflectometer with a polarizer, two spin-flippers and an analyzer of polarization after passing through the sample is presented. A reflectometer designed for a compact neutron source DARIA is planned to measure the spectrum of a reflected “white” neutron beam using the time-of-flight method at a fixed glancing angle with the possibility of using both polarized and non-polarized neutrons. The main geometric and physical parameters of the neutron reflectometer are presented. With a neutron pulse duration τ = 100 µs and a total length of the time-of-flight base L = 8 m, the pulse repetition rate can reach f = 165 Hz for the wavelength range Δλ = 3 Å and resolution Δλ ≅ 0.05 Å. The use of polarization analysis elements of a reflectometer at a beam polarization exceeding 96% and an efficiency of spin flippers close to unity makes it possible to study magnetic thin-film nanostructures in detail.

Keywords

compact neutron source DARIA, neutron reflectometry, polarized neutrons, time-of-flight method.

References

Боднарчук В.И., Булкин А.П., Кравцов Е.А., Плешанов Н.К., Сыромятников В.Г., Ульянов В.А. // Кристаллография. 2022. Т. 67. № 1. С. 57. https://doi.org/10.31857/S0023476122010040
Lauter H.-J., Lauter V., Toperverg B.P. // Polymer Sci. A. 2012. V. 2. P. 411. https://doi.org/10.1016/B978-0-444-53349-4.00033-9
Fitzsimmons M.R., Schuller Ivan K. // J. Magn. Magn. Mater. 2014. V. 350. P. 199. https://doi.org/10.1016/j.jmmm.2013.09.028
Никитенко Ю.В., Сыромятников В.Г. Рефлектометрия поляризованных нейтронов. М.: Физматлит, 2013. С. 224.
Zabel H., Theis-Bröhl K., Toperverg B.P. // The Handbook of Magnetism and Advanced Magnetic Materials, V. 3: Novel Techniques / Ed. Kronmüller H., Parkin S.P.S. New York: Wiley, 2007. P. 1237.
Щебетов А.Ф., Кудряшов В.А., Харченков В.П., Агамалян М.М. // Журн. эксперим. и теор. физики. 1978. Т. 74. № 3. С. 862. http://www.jetp.ras.ru/cgi-bin/dn/e_047_03_0450.pdf
Гукасов А.Г., Дериглазов В.В., Кезерашвили В.Я., Кудряшов В.А., Крутов Г.А., Песков Б.Г., Сыромятников В.Г., Трунов В.А., Харченков В.П., Щебетов А.Ф. // Журн. эксперим. и теор. физики. 1979. Т. 77. № 5. С. 1720.
Syromyatnikov V.G., Pleshanov N.K., Pusenkov V.M., Schebetov A.F., Ul’yanov V.A., Kasman Ya.A., Khakhalin S.I., Kolkhidashvili M.R., Slyusar V.N., Sumbatyan A.A. Four-Modes Neutron Reflectometer NR-4M. Preprint № 2619. Gatchina: PNPI, 2005. P. 47.
Pavlov K.A., Konik P.I., Kovalenko N.A., Kulevoy T.V., Serebrennikov D.A., Subbotina V.V., Pavlova A.E., Grigorev S.V. // Crystallogr. Rep. 2022. V. 67. № 1. P. 3. https://doi.org/10.1134/S1063774522010096
Syromyatnikov V.G. // J. Phys. Soc. Jpn.: Conf. Ser. 2018. V. 22. P. 011005. https://doi.org/10.7566/JPSCP.22.011005
Патент № 2 680 713 (РФ). Прерыватель нейтронного пучка / Сыромятников В.Г. // Приоритет изобретения 30.03.2018. Зарегистрирован в Государственном реестре изобретений РФ 26.02.2019.
Grigoriev S.V., Runov V.V., Okorokov A.I. // Nucl. Instrum. Methods Phys. Res. A. 1997. V. 384. Iss. 2–3. P. 451. https://doi.org/10.1016/S0168-9002(96)00919-9
Syromyatnikov V.G., Ulyanov V.A., Lauter V., Pusenkov V.M., Ambaye H., Goyette R., Hoffmann M., Bulkin A.P., Kuznetsov I.N., Medvedev E.N. // J. Phys.: Conf. Ser. 2014. V. 528. P. 012021. https://doi.org/10.1088/1742-6596/528/1/012021
Schebetov A.F., Pleshanov N.K., Syromyatnikov V.G., Pusenkov V.M., Peskov B.G., Shmelev G.E., Soroko Z.N., Ul’yanov V.A. // J. Phys. Soc. Jpn. 1996. V. 65. (Suppl. A). P. 195. http://inis.iaea.org/search/search.aspx?orig_ q= RN:29007485.
Кащук А.П., Левицкая О.В. // Журн. тех. физики. 2020. Т. 90. № 4. С. 519. https://doi.org/10.21883/JTF.2020.04.49074.84-19