Effect of Nanodiamond Sizes on the Efficiency of the Quasi-Specular Reflection of Cold Neutrons
Bosak A. Dubois M. Korobkina E. Lychagin E. Muzychka A. Nekhaev G. Nesvizhevsky V. Nezvanov A. Saerbeck T. Schweins R. Strelkov A. Turlybekuly K. Zhernenkov K.
January 2023MDPI
Materials
2023#16Issue 2
Nanomaterials can intensively scatter and/or reflect radiation. Such processes and materials are of theoretical and practical interest. Here, we study the quasi-specular reflections (QSRs) of cold neutrons (CNs) and the reflections of very cold neutrons (VCNs) from nanodiamond (ND) powders. The fluorination of ND increased its efficiency by removing/replacing hydrogen, which is otherwise the dominant cause of neutron loss due to incoherent scattering. The probability of the diffuse reflection of VCNs increased for certain neutron wavelengths by using appropriate ND sizes. Based on model concepts of the interaction of CNs with ND, and in reference to our previous work, we assume that the angular distribution of quasi-specularly reflected CNs is narrower, and that the probability of QSRs of longer wavelength neutrons increases if we increase the characteristic sizes of NDs compared to standard detonation nanodiamonds (DNDs). However, the probability of QSRs of CNs with wavelengths below the cutoff of ~4.12 Å decreases due to diffraction scattering on the ND crystal lattice. We experimentally compared the QSRs of CNs from ~4.3 nm and ~15.0 nm ND. Our qualitative conclusions and numerical estimates can help optimize the parameters of ND for specific practical applications based on the QSRs of CNs.
albedo , fluorination , nanodiamonds , nanopowder , quasi-specular reflection , reflectors of slow neutrons
Text of the article Перейти на текст статьи
European Synchrotron Radiation Facility, 71 Av. des Martyrs, Grenoble, F-38043, France
Clermont Auvergne INP, Université Clermont Auvergne, CNRS UMR6296, 24 Av. Blaise Pascal, Aubière, F-63178, France
Department of Nuclear Engineering, North Carolina State University, Raleigh, 27695, NC, United States
Institut Max von Laue—Paul Langevin, 71 Av. des Martyrs, Grenoble, F-38042, France
Faculty of Physics and Technology, L.N. Gumilyov Eurasian National University, Satpayev Str. 2, Astana, 010000, Kazakhstan
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Ibragimova Str. 1, Almaty, 0500032, Kazakhstan
JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungzentrum Jülich GmbH, 1 Lichtenbergstrasse, Garching, D-85748, Germany
European Synchrotron Radiation Facility
Clermont Auvergne INP
Department of Nuclear Engineering
Institut Max von Laue—Paul Langevin
Faculty of Physics and Technology
The Institute of Nuclear Physics
JCNS at Heinz Maier-Leibnitz Zentrum (MLZ)
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026