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  1. No Access

    Article

    Electron Paramagnetic Resonance of Mn2+ Ions in Nanosized Zinc Sulfide with a Planar Lattice Fault

    We have studied the EPR of Mn2+ ions in three samples of cubic nano-ZnS made by different technologies and having different nanoparticle sizes. Manganese occurs in the samples as an uncontrolled impurity. The EPR...

    I. P. Vorona, S. S. Ishchenko, V. G. Grachev… in Journal of Applied Spectroscopy (2019)

  2. No Access

    Article

    Crystal Structure Determination of Low-Dimensional ZnS Powders Using EPR of Mn2+ Ions

    Structures of low-dimensional ZnS powders doped with Cu, Co, and Mn were studied using Mn2+ ions as a paramagnetic probe. Particle sizes were 5–7 μm for ZnS:Cu, 7–10 μm for ZnS:Co, and 50–200 nm for ZnS:Mn. Spin-...

    I. P. Vorona, V. G. Grachev, S. S. Ishchenko… in Journal of Applied Spectroscopy (2016)

  3. No Access

    Article

    Cryogenically cooled low-noise amplifier for radio-astronomical observations and centimeter-wave deep-space communications systems

    We report a design solution for a highly reliable, low-noise and extremely efficient cryogenically cooled transmit/receive unit for a large antenna system meant for radio-astronomical observations and deep-spa...

    V. F. Vdovin, V. G. Grachev, S. Yu. Dryagin, A. I. Eliseev… in Astrophysical Bulletin (2016)

  4. No Access

    Article

    MHD processes in the electromagnetic stirring of liquid metal in continuous section and bloom casters

    The electromagnetic stirring (EMS) of liquid metal in continuous-casting machines has become an integral part of the casting operation in world metallurgy and is done to improve the quality of continuous-cast ...

    B. A. Sivak, V. G. Grachev, V. M. Parshin, A. D. Chertov, S. V. Zarubin… in Metallurgist (2009)

  5. No Access

    Article

    Magnetohydrodynamic processes in the electromagnetic mixing of liquid phase in the ingot on continuous bar- and bloom-casting machines

    The influence of electromagnetic mixing of liquid metal in the continuous-casting machine on the quality of continuous-cast bar and bloom depends on the mixing rate. In world practice, the mixing rate is chara...

    B. A. Sivak, V. G. Grachev, V. M. Parshin, A. D. Chertov… in Steel in Translation (2009)

  6. No Access

    Article

    Mathematically modelling MHD processes in a flow of liquid metal during electromagnetic mixing in semicontinuous steel-casting machines

    Mathematical modeling of electromagnetic mixing (EMM) in round semifinished products obtained on a semicontinuous caster at the Elektrostal’ Metallurgical Plant showed that the units developed for EMM in the m...

    V. G. Grachev, B. A. Sivak, S. V. Zarubin, V. G. Fisenko, A. A. Solov’ev in Metallurgist (2008)

  7. No Access

    Chapter

    Defects in Inorganic Photorefractive Materials and Their Investigations

    The role of defects in the photorefractive effect is known in principle: their photoionization in the brighter regions of a photorefractive crystal, illuminated by an inhomogeneous light pattern, causes quasif...

    B. Briat, V.G. Grachev, G.I. Malovichko… in Photorefractive Materials and Their Applic… (2007)

  8. No Access

    Article

    The Role of VNIImetmash in Designing and Introducing Cross-Cutting Shears for Flat-Rolled Products

    An analysis is made of trends and scientific-technical problems in the development of new cross-cutting shears (CCSs) for cutting flat-rolled products. The modernization of existing shears of this type is also...

    S. N. Sumskii, V. G. Grachev, F. S. Solodovnik, Yu. M. Rogachikov in Metallurgist (2004)

  9. No Access

    Article

    Highly accurate determination of the coordinates and the Earth’s rotation parameters involving the Svetloe VLBI Observatory

    We present the results of our processing of the first observations of extragalactic radio sources obtained with the eight-element International VLBI Network, which includes the Svetloe Russian Radio Astronomy ...

    A. M. Finkelstein, A. V. Ipatov, S. G. Smolentsev, V. G. Grachev… in Astronomy Letters (2003)

  10. No Access

    Article

    Characterization of stoichiometric LiNbO3 grown from melts containing K2O

    The growth of LiNbO3 single crystals from a melt with the Li/Nb ratio of 0.946, to which 6 wt.% K2O has been added, leads to stoichiometric specimens, essentially free of potassium, with (50±0.15) mol% Li2O in th...

    G. I. Malovichko, V. G. Grachev, E. P. Kokanyan, O. F. Schirmer… in Applied Physics A (1993)

  11. No Access

    Chapter and Conference Paper

    Dedicated Soviet VLBI-Network “QUASAR”

    The radiointerferometrical network “QUASAR”, composed of six dedicated VLBI stations linked via a geostationary satellite channel with the Center of Operations, is under construction in the Soviet Union. It is...

    A. M. Finkelstein, G. S. Golubchin… in Inertial Coordinate System on the Sky (1990)

  12. No Access

    Article

    Neutral hydrogen in the vicinity of galactic radio sources

    Results are reported from investigations of neutral hydrogen in the vicinity of a number ofHii regions. The observations were performed on a RATAN-600 radio-telescope with angular and velocity resolutions of 2′×1...

    A. P. Venger, I. V. Gosachinskij, V. G. Grachev… in Astrophysics and Space Science (1984)

  13. No Access

    Chapter and Conference Paper

    Resonance Splitting of EPR Line by Intensive Radiofrequatcy Field and His Display in ENDOR

    It was showed by transition into rotated frame that the radiofrequency (RF) field causes both the change of electronic spin-lattice relaxation time and the change of the position of electronic spin levels. The...

    V. G. Grachev in Magnetic Resonance and Related Phenomena (1979)

  14. No Access

    Article

    Quartz-filter spectrum analyzer

    V. G. Grachev, V. A. Prozorov in Radiophysics and Quantum Electronics (1976)