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  1. No Access

    Article

    Hyperpolarization of Nuclei by the Method of Spin-Exchange Optical Pum**

    A review of theoretical concepts of the ways of producing 129Xe nuclei hyperpolarized in magnetic moment by optical pum** of alkali atoms with their subsequent collisional spin exchange (SEOP) with noble gas is...

    G. Yu. Grigoriev, A. S. Lagutin, A. V. Maksimychev… in Physics of Particles and Nuclei (2024)

  2. No Access

    Article

    Determination of the Shape and Dimensions of the Polymer Molecules in Solutions Using Diffusional NMR Relaxation

    A new method of determining the dimensions and shapes of polymer molecules in solutions is proposed and verified in experiments. The method is based on the measurements of the relaxation of the transverse magn...

    V. A. Ivanova, A. V. Maksimychev, P. L. Men’shikov, A. R. Pashutin… in Fluid Dynamics (2024)

  3. No Access

    Article

    NMR Studies of Porous Media: Specific Features

    A model water-filled porous medium is investigated using NMR techniques, and the results of these measurements are interpreted theoretically. A rigorous theoretical description of the near-surface layer, quali...

    D. A. Aleksandrov, A. A. Voronov… in Physics of Particles and Nuclei Letters (2021)

  4. No Access

    Article

    Bound States of Repulsing Adsorbed Atoms

    The interaction between two slow atoms adsorbed on the surface is considered. It is shown that, similar to Efimov states of three particles, this system has a bound state at any sign of the scattering length.

    A. V. Maksimychev, L. I. Men’shikov, P. L. Men’shikov in JETP Letters (2021)

  5. No Access

    Article

    Acceleration of Ion Rings by Collapsing Liners

    We have established the conditions for the absence of Alfvén ion-cyclotron instability in the formation and subsequent acceleration of ion rings by collapsing cylindrical plasma liners.

    A. S. Dzarakhokhova, N. P. Zaretskiy, A. V. Maksimychev… in Technical Physics (2020)

  6. No Access

    Article

    Conditions for the Stable Acceleration of Ion Rings by Collapsed Liners

    The conditions of suppressing the collective slowing-down of an ionic beam on electrons, which is caused by the excitation of electron plasma oscillations (beam instability) by ions, are found. In contrast to ...

    A. S. Dzarakhohova, N. P. Zaretskiy… in Journal of Experimental and Theoretical Ph… (2020)

  7. No Access

    Article

    Preparation of phthalates via carbonylation of o-dibromobenzenes in solutions of Pd catalysts and reactivity of Ar−Br bonds

    Carbonylation of o-dibromobenzene and its derivatives in the presence of palladium phosphine complexes with NaOAc or Et3N additive leads to the formation of phthalates in high yield under mild conditions. Correla...

    A. R. Elman, A. M. Perepukhov, L. V. Ovsyannikova… in Russian Journal of General Chemistry (2017)

  8. No Access

    Article

    Specific features of proton NMR relaxation of hydrocarbons and water in the pore space of silicates

    The relaxation of the proton magnetization of water and hydrocarbons in a model medium of glass beads and quartz sand is studied by the NMR method. The spectrum of relaxation times of fluids is one-component i...

    A. M. Perepukhov, O. V. Kishenkov, S. V. Gudenko… in Russian Journal of Physical Chemistry B (2014)

  9. No Access

    Article

    On the state of CH4 molecule in the octahedral void of C60 fullerite

    Methane-intercalated fullerite (CH4)0.56C60 was obtained by low-temperature precipitation from solution. Methane transition from the gas phase to the octahedral void of fullerite is accompanied by a bathochromic ...

    Yu. M. Shul’ga, A. F. Shestakov, V. M. Martynenko… in Russian Chemical Bulletin (2011)

  10. No Access

    Article

    Structure and hydration processes in perfluorinated bilayer cation-exchange membranes

    Based on perfluorinated polymers MF-4SK and F-4KF bilayer composite ion-exchange membranes are studied by using the magic-angle-rotation NMR, electrochemical impedance spectroscopy, scanning electron microscop...

    S. L. Shestakov, E. V. Korostylev, S. V. Timofeev… in Russian Journal of Electrochemistry (2011)

  11. No Access

    Chapter and Conference Paper

    The Temperature Dependence of Chemical Shifts of Individual Peaks in the 13C NMR Spectrum of the Fullerite C60, Doped with Molecular Oxygen

    The methods of solid-state high-resolution NMR have been applied to investigate samples of fullerite C60, doped with molecular oxygen. It was found that in the case of well-crystallized (O2)0.44C60 sample the tem...

    O. V. Val’ba, E. M. Anokhin… in Carbon Nanomaterials in Clean Energy Hydro… (2011)

  12. No Access

    Article

    A NMR study of the hydration of sulfo and carboxyl groups in perfluorinated cation exchange membranes

    The mobility of the polymer matrix and the structure of the hydration complex in the acid forms of perfluorinated ion exchange membranes MF-4SK and F-4KF depending on moisture content were studied by 1H, 13C, and...

    S. L. Shestakov, A. A. Pavlov, A. V. Maksimychev… in Russian Journal of Physical Chemistry B (2010)

  13. No Access

    Article

    The structure of fullerite C60 intercalated with molecular oxygen

    A (O2) x C60 sample with a high content of oxygen (x ≥ 0.4) and free of technological solvent impurities was obtained by precipitation from solution. For the first time, the resu...

    Yu. M. Shul’ga, V. M. Martynenko, E. M. Anokhin… in Russian Journal of Physical Chemistry B (2010)

  14. No Access

    Article

    Phase transitions and ion transport in NASICON materials of composition Li1 + x Zr2 − x In x (PO4)3(x = 0–1)

    NASICON materials of composition Li1 + x Zr2 − x In x (PO4)3(x = 0–1) were synthesized. The phase constitution, particle size, and...

    D. V. Safronov, I. A. Stenina, A. V. Maksimychev… in Russian Journal of Inorganic Chemistry (2009)

  15. No Access

    Article

    Mechanism of proton conductivity in polyvinyl alcohol-phenolsulfonic acid membranes from 1H and 13C NMR data

    With line narrowing during magic angle spinning in solid-state NMR, molecular mobility and hydration in composite membranes based on polyvinyl alcohol (PVA) and phenol-2,4-disulfonic acid (PSA) were studied as...

    V. I. Volkov, A. I. Rebrov, E. A. Sanginov… in Russian Journal of Electrochemistry (2009)

  16. No Access

    Article

    Space and Time Correlations in a Dissipative Structure Emerging in an Electrochemical System with a Cation-Exchange Membrane

    The mechanism of electromasstransfer in a system containing a cation-exchange membrane at a current density exceeding the limiting diffusion current is studied by analyzing the electric potential fluctuations....

    E. Yu. Budnikov, A. V. Maksimychev, A. V. Kolyubin… in Russian Journal of Electrochemistry (2001)

  17. No Access

    Article

    Wavelet and fourier analysis of electric fluctuations in semiconductor and electrochemical systems

    Wavelet analysis and Fourier spectroscopy were used to study electric noise observed in InSb photodiodes and in electric systems with a cation-exchange membrane in NaCl solution.

    E. Yu. Budnikov, I. Yu. Kuboev, A. V. Maksimychev… in Measurement Techniques (1999)

  18. No Access

    Article

    Electrophysical characteristics of several organic compounds at high pressures and high pressures combined with shearing strains

    1. The application of high pressures results in an increase in the dielectric constant of organic compounds, whi...

    V. A. Zhorin, A. V. Maksimychev… in Bulletin of the Academy of Sciences of the… (1979)