First Measurements at Neutron Reflectometers TNR and NERO-2
- Authors: Dyachkov M.V.1, Matveev V.A.1, Syromyatnikov V.G.1,2, Tarnavich V.V.1, Ulyanov V.A.1
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Affiliations:
- National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research
- Saint Petersburg University
- Issue: No 8 (2024)
- Pages: 11-19
- Section: Articles
- URL: https://journals.rcsi.science/1028-0960/article/view/274320
- DOI: https://doi.org/10.31857/S1028096024080027
- EDN: https://elibrary.ru/ELVORZ
- ID: 274320
Cite item
Abstract
Paper briefly describes the main units of TNR and NERO-2 neutron reflectometers installed in the hall of horizontal experimental channels of the new high flux PIK-reactor (NRC “Kurchatov Institute”– PNPI) as part of the program for commissioning the first five stations of the instrument base of this reactor. TNR and NERO-2 neutron reflectometers are designed for conducting studies of the magnetic and non-magnetic multilayer nanostructures, including certification of neutron-optical elements for the neutron stations. The TNR has the ability to work in measurement modes with “white” unpolarized/polarized beams and with monochromatic unpolarized/polarized neutron beams (wavelengths from 0.09 to 0.5 nm). NERO-2 is a high-resolution reflectometer with a fixed wavelength and the ability to work with both non-polarized and polarized monochromatic beams. The paper discusses the results of the first measurements of neutron-optical samples on a glass substrates carried out on TNR and NERO-2 reflectometers at the start of the PIK reactor at a power of 7 MW. Measurements were carried out on TNR with a supermirror, which is an aperiodic multilayer nanosystem of 171 pairs of alternating Ni and Ti layers (m = 2.5). On NERO-2, measurements were carried out with a mirror monochromator, which is a periodic multilayer nanosystem of 60 pairs of alternating NiMo and Ti layers with a thickness of 60 Å each.
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About the authors
M. V. Dyachkov
National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research
Author for correspondence.
Email: dyachkov_mv@pnpi.nrcki.ru
Russian Federation, Gatchina, 188300
V. A. Matveev
National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research
Email: matveev_va@pnpi.nrcki.ru
Russian Federation, Gatchina, 188300
V. G. Syromyatnikov
National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research; Saint Petersburg University
Email: syromyatnikov_vg@pnpi.nrcki.ru
Faculty of Physics
Russian Federation, Gatchina, 188300; Peterhof, Saint Petersburg, 198504V. V. Tarnavich
National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research
Email: dyachkov_mv@pnpi.nrcki.ru
Russian Federation, Gatchina, 188300
V. A. Ulyanov
National Research Centre “Kurchatov Institute” — Petersburg Institute of Nuclear Research
Email: dyachkov_mv@pnpi.nrcki.ru
Russian Federation, Gatchina, 188300
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