Construction of a Spin-Echo Small-Angle Neutron Scattering Instrument for the PIK Reactor

Autor: Yu. O. Chetverikov, L. A. Akselrod, S. V. Grigor’ev, V. Kraan, A. A. Sumbatyan, A. V. Nagorny, V. V. Tarnavich

Publikováno v: Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 16(5)

The current state of the implementation of the project for building a spin-echo instrument for small-angle neutron scattering at the PIK reactor of the St. Petersburg Nuclear Physics Institute, National Research Center “Kurchatov Institute,” is d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70ca517dc8a5119baaaa8afa7c9f1a97
https://doi.org/10.1134/s1027451022050287

Magnetic phase diagram of Y 1−x Tb x Mn 6 Sn 6 compounds

Autor: A. A. Bykov, S. V. Grigoriev, E.V. Moskvin, A. N. Pirogov, Yu. O. Chetverikov

Publikováno v: Journal of Magnetism and Magnetic Materials. 424:347-351

The Y 1−x Tb x Mn 6 Sn 6 compounds ( x =0, 0.175, 0.2, 0.225, 0.25) were studied by small angle neutron scattering (SANS) and paramagnetic neutron spin echo. The YMn 6 Sn 6 compound is found to be a helimagnet in the whole temperature range below T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7bd9dc1a1ef86f2f80b660a747fb0193
https://doi.org/10.1016/j.jmmm.2016.10.037

Content and Isotope Ratios of Noble Gases in Congelation Ice of Lake Vostok

Autor: V. F. Ezhov, Yu. O. Chetverikov, V. A. Solovei, K. A. Gruzdov, R. V. Tyukal’tsev, Philippe Jean-Baptiste, S. A. Bulat, V. Ya. Lipenkov, I. L. Kamenskii, I. L. Fedichkin, N. N. Aruev, E. M. Prasolov

Publikováno v: Technical Physics / Zhurnal Tekhnicheskoi Fiziki
Technical Physics / Zhurnal Tekhnicheskoi Fiziki, MAIK Nauka/Interperiodica (МАИК Наука/Интерпериодика), 2018, 63 (5), pp.738-746. ⟨10.1134/S1063784218050055⟩
Technical Physics / Zhurnal Tekhnicheskoi Fiziki, 2018, 63 (5), pp.738-746. ⟨10.1134/S1063784218050055⟩

Isotope ratios of noble gases (He, Ne, Ar) were studied in samples collected by degassing of cores of water frozen over a glacier of Lake Vostok. The gases were collected into glass retorts during three days of degassing of cores, which have just bee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64cd3a183099a27beea5615239f0d9dc
https://hal.archives-ouvertes.fr/hal-02976254

Quasi-two-dimensional character of the magnetic order-disorder transition in YMn6Sn6

Autor: Yu. O. Chetverikov, A. N. Pirogov, A. A. Bykov, S. V. Grigor’ev

Publikováno v: JETP Letters. 101:699-702

The magnetic structure of YMn6Sn6 helimagnet has been studied by small-angle neutron scattering in the temperature range from 25 to 360 K. Two peaks with centers at 1.7 and 0 nm−1 have been observed in the dependences of the intensity of neutron sc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e32ddbef6672f72a774722ac971f733
https://doi.org/10.1134/s0021364015100057

Algorithm of the Computer Modelling and a SESANS Setup with Adiabatic RF-Flippers

Autor: Wicher H. Kraan, E. G. Yashina, Yu. O. Chetverikov, S. V. Grigoriev, A. A. Sumbatyan, L. A. Axel’rod, V. N. Zabenkin

Publikováno v: Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques, 11(6)

We made software to simulate Larmor precession in a setup for SESANS with adiabatic/RF flippers in magnets, existing at PNPI. The final polarisation of a divergent “gribbon beam” of height 2 cm is calculated as a function of λ. For λ = 6 A, fli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6de82e9ab4b0670a9f7515ab80a24140
http://resolver.tudelft.nl/uuid:4e82aa0a-196c-471d-b471-81c3b44394b2