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Mankov, Y. I.
Electromagnetic waves with a negative group velocity in a randomly inhomogeneous Josephson junction / Y. I. Mankov // Phys. Solid State. - 2013. - Vol. 55, Is. 5. - P. 924-929, DOI 10.1134/S1063783413050223 . - ISSN 1063-7834
Аннотация: Electromagnetic waves in a randomly inhomogeneous Josephson junction have been investigated by the averaged Green's function method for a nonmonotonic decay of the correlations of inhomogeneities. Modifications of the spectrum and the decay of these excitations caused by spatial fluctuations of the critical current of the Josephson junction have been studied. The regions of the values of the frequency, the wave number, and the stochastic parameters of the medium, at which the waves have a negative group velocity, have been determined. В© 2013 Pleiades Publishing, Ltd.

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Публикация на русском языке Маньков, Юрий Иннокентьевич. Электромагнитные волны с отрицательной групповой скоростью в случайно-неоднородном джозефсоновском переходе / Ю. И. Маньков // Физика твердого тела. - 2013. - Т. 55, Вып. 5. - С. 850-854

Доп.точки доступа:
Маньков, Юрий Иннокентьевич
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Маньков, Юрий Иннокентьевич.
Электромагнитные волны с отрицательной групповой скоростью в случайно-неоднородном джозефсоновском переходе / Ю. И. Маньков // Физ. тверд. тела. - 2013. - Т. 55, Вып. 5. - С. 850-854
Аннотация: Методом усредненных функций Грина исследованы электромагнитные волны в случайно-неоднородном джозефсоновском переходе при немонотонном спаде корреляций неоднородностей. Изучены модификация спектра и затухание этих возбуждений, обусловленные пространственными флуктуациями критического тока джозефсоновского перехода. Определены области значений частоты, волнового числа и стохастических параметров среды, при которых волны имеют отрицательную групповую скорость.

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Переводная версия Electromagnetic waves with a negative group velocity in a randomly inhomogeneous Josephson junction. - [Б. м. : б. и.]

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Man'kov, Yu.I.
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Photonic amplification and switching through nonlinear coupling with negative phonons / A. K. Popov [et al.] // Int. Conf. Phot. Switch., PS 2012. - 2012. - Ст. 6608287. - P. . - ISBN 9782912328618 (ISBN)
Кл.слова (ненормированные):
extraordinary stimulated Raman scattering -- negative group velocity -- nonlinear optical wave mixing -- optical phonos -- photonic components and devices
Аннотация: A family of switching photonic devices and amplifiers are proposed which mimic and utilize extraordinary coherent nonlinear-optical frequency conversion processes commonly attributed to plasmonic metamaterials. В© 2012 SEE.

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Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Myslivets, S. A.; Мысливец, Сергей Александрович; Shalaev, M. I.; Slabko, V. V.; Слабко, Виталий Васильевич; International Conference on Photonics in Switching (6 ; 2012 ; Sept ; 11-14 ; Ajaccio, France)
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Nonlinear optics with backward waves: Extraordinary features, materials and applications [] / A. K. Popov [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2014. - Vol. 213: Physics and Technology of Nanostructured Materials II. - P. 222-225, DOI 10.4028/www.scientific.net/SSP.213.222 . - ISSN 1662-9779. - ISSN 9783-0378
Кл.слова (ненормированные):
Backward waves -- Negative group velocity -- Negative-index metamaterials -- Nonlinear optical frequency mixing -- Optical phonons -- Spatial dispersion
Аннотация: Extraordinary properties of nonlinear-optical propagation processes are investigated that involve electromagnetic or elastic waves with negative group velocity. Nanostructured materials that support such waves and prospective unique photonic devices are described. В© (2014) Trans Tech Publications, Switzerland.

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Доп.точки доступа:
Galkin, N. \ed.\; Popov, A. K.; Slabko, V. V.; Слабко, Виталий Васильевич; Shalaev, M. I.; Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович; Asian School-Conference on Physics and Technology of Nanostructured Materials(2 ; 2013 ; Aug. ; 20-27 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(2 ; 2013 ; авг. ; 20-27 ; Владивосток)
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Sorokin, B. P.
Influence of heterogeneous external fields on propagation of bulk acoustic waves in crystals / B. P. Sorokin, A. N. Marushyak, K. S. Aleksandrov // Proceedings - IEEE Ultrasonics Symposium. - 2008. - Ст. 4803313. - P. 1472-1475, DOI 10.1109/ULTSYM.2008.0358 . - ISBN 1051-0117
Кл.слова (ненормированные):
Bulk elastic wave -- Non-homogeneous mechanical loading -- Phase velocity -- Wave surface -- Bulk acoustic waves -- Bulk elastic wave -- Bulk waves -- External fields -- Non-homogeneous -- Non-homogeneous mechanical loading -- Numerical calculation -- Small amplitude -- Wave surface -- Acoustic fields -- Crystals -- Elastic waves -- Elasticity -- Phase velocity -- Silicon compounds -- Soil structure interactions -- Waves -- Velocity
Аннотация: Formulas describing the influence of nonhomogeneous pressure on propagation of bulk waves in crystals have derived. Phase velocity for small amplitude waves in Bi12SiO20 crystal the action of non-homogeneous pressure has been . Under those conditions the behavior of the wave has researched. Numerical calculation of phase velocity of and their directions propagation changing have obtained. В©2008 IEEE.

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Доп.точки доступа:
Marushyak, A. N.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; IEEE International ultrasonics symposium(2008 ; Nov. ; 2-5 ; Beijing, China)
}
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Bulk acoustic waves propagation in Li2B4O7 piezoelectric crystals under the static uniaxial mechanical pressure / K. S. Aleksandrov [et al.] // Proceedings of the Annual IEEE International Frequency Control Symposium / Annual frequency control symposium (54 ; 2000 ; Jun. ; 7-9 ; Kansas, MO). - 2000. - P. 214-217. - Cited References: 8 . - ISBN 01616404
Кл.слова (ненормированные):
Acoustic wave transmission -- Acoustic wave velocity -- Elasticity -- Lithium compounds -- Mathematical models -- Permittivity -- Piezoelectricity -- Pressure effects -- Single crystals -- Electromechanical constants -- Piezoelectric crystal -- Piezoelectric materials
Аннотация: The influence of uniaxial mechanical stresses on bulk acoustic waves velocity in piezoelectric crystals Li2B4O7 has been investigated. Electromechanical constants have determined.

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Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Turchin, P. P.; Sorokin, B. P.; Karpovich, A. A.; Nefedov, V. A.; Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas, MO)
}
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Aleksandrov, K. S.
The study of elastic symmetry and anisotropy of elastic body waves in gneiss / K. S. Aleksandrov, G. T. Prodayvoda // Geophysical Journal International. - 1994. - Vol. 119, Is. 3. - P. 715-728 . - ISSN 0956-540X
Кл.слова (ненормированные):
anisotropy -- Elastic Properties -- elastic symmetry -- Elastic Wave Velocity -- gneiss -- Gneiss -- phase velocity -- polarization -- Ultrasonics -- Europe, Baltic Shield
Аннотация: Describes a method for determining the effective elastic constants of anisotropic rocks from the results of ultrasonic measurements of the phase velocity of elastic body waves with arbitrary directions of the wave normal in the absence of a priori information on the texture symmetry. The proposed method has been applied to the results of ultrasonic measurements of a twice-deformed gneiss sample from the Lodogian series of the Baltic Shield. Experimental findings conform to triclinic symmetry. -from Authors

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Держатели документа:
Inst of Physics, Siberian Div of Russian Acad Sci, Akademgorodok, Krasnoyarsk, Russia

Доп.точки доступа:
Prodayvoda, G. T.; Александров, Кирилл Сергеевич
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Morozov, E. V.
MRI Comparative Study of Container Geometry Impact on the PMMA Spheres Sedimentation / E. V. Morozov, O. V. Shabanova, O. V. Falaleev // Appl. Magn. Reson. - 2013. - Vol. 44, Is. 5. - P. 619-636, DOI 10.1007/s00723-012-0432-8. - Cited References: 31 . - ISSN 0937-9347

РУБ Physics, Atomic, Molecular & Chemical + Spectroscopy
Рубрики:
OPAL PHOTONIC CRYSTALS
   SUSPENSIONS
   PARTICLES
   VELOCITY
Аннотация: Nuclear magnetic resonance (NMR) imaging results are presented for the comparative study of sedimentation of the polymethylmethacrylate colloidal suspensions with spherical particle diameters of 475, 350 and 255 nm. The time evolution of the particle volume fraction in the sedimenting system, velocity of the fluid/suspension interface, interface broadening, and sediment growth velocity are measured against the system concentration as well as the container geometry. Using the experimental data the hindered settling function is evaluated. The influence of the container geometry on the parameters defining the hindered settling function in different approaches is evaluated for the first time. The limiting value of the particle diameter is estimated at which the container geometry has no impact any longer. This effect can be explained by the microscale structure persisting at low Peclet numbers. In addition, the influence of the container geometry on interface broadening and sediment formation for different particle diameters and volume fractions is studied. Spontaneous sediment packing induced by a modified container geometry has been found. NMR imaging has proven to be a highly efficient research tool for studying sedimentation at low Peclet numbers.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Special Design & Technol Bur Nauka, Krasnoyarsk 660049, Russia

Доп.точки доступа:
Shabanova, O. V.; Falaleev, O. V.; Морозов, Евгений Владимирович
}
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Kinetic Alfven wave instability in a Lorentzian dusty magnetoplasma / N. . Rubab [et al.] // Phys. Plasmas. - 2010. - Vol. 17, Is. 10. - Ст. 103704, DOI 10.1063/1.3491336. - Cited References: 54. - This work is funded by the Higher Education Commission of Pakistan under the HEC-Overseas scholarship program Grant No. Ref: 1-1/PM OS /Phase-II/Batch-I/Austria/2007/. Part of this work was done while N. V. Erkaev was at the Space Research Institute of the Austrian Academy of Sciences in Graz. This work is also supported due to the RFBR Grant No. 09-05-91000-ANF-a. Further support is due to the "Austrian Fonds zur Forderung der Wissenschaftlichen Forschung" under Grant No. P20145-N16. . - ISSN 1070-664X

РУБ Physics, Fluids & Plasmas
Рубрики:
MAXWELLIAN DISTRIBUTION-FUNCTIONS
   FREQUENCY ELECTROMAGNETIC-WAVES
   SOLAR-WIND
   CHARGE FLUCTUATION
   2-STREAM INSTABILITIES
   ELECTROSTATIC MODES
   SPACE PLASMAS
   ION PLASMA
   TEMPERATURE
   PROPAGATION
Кл.слова (ненормированные):
Analytical expressions -- Dispersion relations -- Distributed streaming -- Dust acoustic -- Dust particle -- Growth rate of instabilities -- Magnetized electrons -- N-waves -- Potential theory -- Slow motion -- Streaming velocity -- Theoretical approach -- Two stream instability -- Whistler waves -- Dust -- Magnetic field effects -- Plasma waves -- Stability -- Acoustic wave propagation
Аннотация: This study presents a theoretical approach to analyze the influence of kappa distributed streaming ions and magnetized electrons on the plasma wave propagation in the presence of dust by employing two-potential theory. In particular, analytical expressions under certain conditions are derived for various modes of propagation comprising of kinetic Alfven wave streaming instability, two stream instability, and dust acoustic and whistler waves. A dispersion relation for kinetic Alfven-like streaming instability has been derived. The effects of dust particles and Lorentzian index on the growth rates and the threshold streaming velocity for the excitation of the instability are examined. The streaming velocity is observed to be destabilizing for slow motion and stabilizing for fast streaming motions. It is also observed that the presence of magnetic field and superthermal particles hinders the growth rate of instability. Possible applications to various space and astrophysical situations are discussed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3491336]

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Держатели документа:
[Rubab, N.
Biernat, H. K.] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
[Rubab, N.
Biernat, H. K.] Graz Univ, Inst Phys, A-8010 Graz, Austria
[Erkaev, N. V.] Inst Computat Modelling, Krasnoyarsk 660036, Russia
[Erkaev, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Langmayr, D.] Virtual Vehicle Competence Ctr Vif, A-8010 Graz, Austria
ИВМ СО РАН
Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria
And Institute of Physics, University of Graz, Universitatplatz 5, A-8010 Graz, Austria
Institute of Computational Modelling, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660041 Krasnoyarsk, Russian Federation
Virtual Vehicle Competence Center (Vif), Inffeldgasse 21a, 8010 Graz, Austria

Доп.точки доступа:
Rubab, N.; Erkaev, N. V.; Еркаев, Николай Васильевич; Langmayr, D.; Biernat, H. K.
}
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10.

Magnetoelastic effects in terbium ferroborate / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2008. - Vol. 34, Is. 11. - P. 901-908 ; Физика низких температур, DOI 10.1063/1.3009584. - Cited References: 17 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
CRYSTAL-STRUCTURE
ND
Кл.слова (ненормированные):
acoustic wave velocity -- antiferromagnetic materials -- elastic moduli -- exchange interactions (electron) -- iron compounds -- magnetoelastic effects -- solid-state phase transformations -- terbium compounds
Аннотация: The behavior of the elastic moduli and sound absorption in a terbium orthoborate single crystal at low temperatures is studied. The components of the tensor of the elastic moduli of this system are determined. A structural phase transition and a transition of the magnetic subsystem into an antiferromagnetically ordered state appear in the temperature dependences of the sound velocities and absorption. The magnetic field dependences of the velocities of transverse sound exhibit singularities in the form of jumps at a magnetic field equal to the field of the spin-flop transition of the antiferromagnetic subsystem. Theoretical analysis shows that the observed behavior of the acoustic characteristics are associated not with the rare-earth subsystem of ferroborate but rather with the renormalization of the exchange interaction between iron ions as a result of the magnetoelastic coupling.

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
B. I. Verkin Institute for Low-Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Adcademy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Bilych, I. V.; Zvyagin, A. A.

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11.

Shear driven waves in the induced magnetosphere of Mars / H. . Gunell [et al.] // Plasma Phys. Control. Fusion. - 2008. - Vol. 50, Is. 7. - Ст. 74018, DOI 10.1088/0741-3335/50/7/074018. - Cited References: 27 . - ISSN 0741-3335

РУБ Physics, Fluids & Plasmas + Physics, Nuclear
Рубрики:
SOLAR-WIND INTERACTION
   KELVIN-HELMHOLTZ INSTABILITY
   MARTIAN ATMOSPHERE
   VELOCITY SHEAR
   VENUS
   PLASMA
   MHD
   IONOPAUSE
   SIMULATIONS
   BOUNDARY
Кл.слова (ненормированные):
Charged particles -- Magnetosphere -- Motion estimation -- Natural frequencies -- Plasma stability -- Shearing machines -- p ,p ,t measurements -- Computational results -- Electron densities -- Fundamental frequency (FF) -- Higher harmonics -- ion densities -- Ion velocities -- velocity shear -- Electrons
Аннотация: We present measurements of oscillations in the electron density, ion density and ion velocity in the induced magnetosphere of Mars. The fundamental frequency of the oscillations is a few millihertz, but higher harmonics are present in the spectrum. The oscillations are observed in a region where there is a velocity shear in the plasma flow. The fundamental frequency is in agreement with computational results from an ideal-MHD model. An interpretation based on velocity-shear instabilities is described.

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Держатели документа:
[Gunell, H.
Koepke, M.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA
[Amerstorfer, U. V.
Biernat, H. K.] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
[Amerstorfer, U. V.
Biernat, H. K.] Graz Univ, Inst Phys, A-8010 Graz, Austria
[Nilsson, H.
Holmstrom, M.
Lundin, R.
Barabash, S.] Swedish Inst Space Phys, SE-98128 Kiruna, Sweden
[Grima, C.] Lab Planetol Grenoble, F-38041 Grenoble 9, France
[Fraenz, M.] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany
[Winningham, J. D.
Frahm, R. A.] SW Res Inst, San Antonio, TX USA
[Sauvaud, J-A
Fedorov, A.] Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France
[Erkaev, N. V.] Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk 660036 36, Russia
ИВМ СО РАН
Department of Physics, West Virginia University, Morgantown, WV 26506-6315, United States
Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, A-8042 Graz, Austria
Institute of Physics, University of Graz, Universitatsplatz 5, A-8010 Graz, Austria
Swedish Institute of Space Physics, P.O. Box812, SE-981 28 Kiruna, Sweden
Laboratoire de Planetologie de Grenoble, BP-53, F-38041 Grenoble Cedex 9, France
Max-Planck-Institut fur Sonnensystemforschung, Max-Planck-Stra?e 2, 37191 Katlenburg-Lindau, Germany
Southwest Research Institute, San Antonio, TX 7228-0510, United States
Centre d'Etude Spatiale des Rayonnements, BP-4346, F-31028 Toulouse, France
Institute of Computational Modelling, Russian Academy of Sciences, 660036 Krasnoyarsk-36, Russian Federation

Доп.точки доступа:
Gunell, H.; Amerstorfer, U. V.; Nilsson, H.; Grima, C.; Koepke, M.; Franz, M.; Winningham, J. D.; Frahm, R. A.; Sauvaud, J. A.; Fedorov, A.; Erkaev, N. V.; Еркаев, Николай Васильевич; Biernat, H. K.; Holmstrom, M.; Lundin, R.; Barabash, S.
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12.

Erkaev, N. V.
Magnetic double-gradient instability and flapping waves in a current sheet / N. V. Erkaev, V. S. Semenov, H. K. Biernat // Phys. Rev. Lett. - 2007. - Vol. 99, Is. 23. - Ст. 235003, DOI 10.1103/PhysRevLett.99.235003. - Cited References: 10 . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETOTAIL CURRENT SHEET
CLUSTER
Кл.слова (ненормированные):
Magnetic fields -- Magnetic properties -- Magnetohydrodynamics -- Velocity measurement -- Current sheets -- Flapping waves -- Magnetic gradients -- Stable regions -- Electromagnetic waves
Аннотация: A new kind of magnetohydrodynamic instability and waves are analyzed for a current sheet in the presence of a small normal magnetic field component varying along the sheet. These waves and instability are related to the existence of two gradients of the tangential (B(tau)) and normal (B(n)) magnetic field components along the normal (del(n)B(tau)) and tangential (del(tau)B(n)) directions with respect to the current sheet. The current sheet can be stable or unstable if the multiplication of two magnetic gradients is positive or negative. In the stable region, the kinklike wave mode is interpreted as so-called flapping waves observed in Earth's magnetotail current sheet. The kink wave group velocity estimated for the Earth's current sheet is of the order of a few tens of kilometers per second. This is in good agreement with the observations of the flapping motions of the magnetotail current sheet.

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Держатели документа:
Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk, Russia
Siberian Fed Univ, Krasnoyarsk, Russia
St Petersburg State Univ, Inst Phys, St Petersburg, Russia
Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria
Graz Univ, Inst Phys, Graz, Austria
ИВМ СО РАН
Institute of Computational Modelling, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Physics, State University of St. Petersburg, St. Petersburg, Russian Federation
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
Institute of Physics, University of Graz, Graz, Austria

Доп.точки доступа:
Semenov, V. S.; Biernat, H. K.; Еркаев, Николай Васильевич
}
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13.

Korshunov, M. M.
LDA plus GTB (generalized tight-binding) method for the electronic structure calculations of strongly correlated electron systems: Application for the band structure calculations of p-type cuprates / M. M. Korshunov, S. G. Ovchinnikov // Physica C. - 2007. - Vol. 460: 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (JUL 09-14, 2006, Dresden, GERMANY). - P. 1018-1019, DOI 10.1016/j.physc.2007.03.381. - Cited References: 12 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
3-CENTER INTERACTIONS
MODEL
Кл.слова (ненормированные):
strongly correlated electron systems -- superconductivity -- p-type cuprates -- spin fluctuations -- fermi surface -- Fermi surface -- p-Type cuprates -- Spin fluctuations -- Strongly correlated electron systems -- Superconductivity -- Band structure -- Correlation methods -- Electronic structure -- Fermi surface -- Hubbard model -- Mean field theory -- Spin fluctuations -- Superconductivity -- Fermi velocity -- Hole pockets -- Strongly correlated electron systems -- Oxide superconductors
Аннотация: Mean-field theory of the non-superconducting phase of the high-T-c cuprates is formulated within the effective t-t'-t"-J model with three-site correlated hoppings. This model with the ab initio calculated parameters results from the LDA + GTB method. The static spin and kinematical correlation functions beyond Hubbard I approximation are calculated self-consistently taking into account hoppings to the first, the second, and the third neighboring sites, as well as the three-site correlated hoppings. The obtained Fermi surface evolves from hole-pockets at low-doping to large hole-type Fermi surface at higher doping concentrations. Calculated doping dependence of the nodal Fermi velocity, the effective mass and the chemical potential shift are in good agreement with experimental data. (c) 2007 Elsevier B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Russian Acad Sci, Siberian Branch, Krasnoyarsk 660036, Russia
Max planck Int Phys Kimplexer Syst, D-01187 Dresden, Germany
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Max-Planck-Institut fur Physik komplexer Systeme, Nothnitzer Str. 38, D-01187 Dresden, Germany

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Коршунов, Максим Михайлович
}
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14.

Vasil'ev, E. N.
Numerical simulation of interaction between arc discharge and transverse magnetic field / E. N. Vasil'ev, D. A. Nesterov // High Temp. - 2007. - Vol. 45, Is. 2. - P. 137-142, DOI 10.1134/S0018151X07020010. - Cited References: 12 . - ISSN 0018-151X

РУБ Physics, Applied

Кл.слова (ненормированные):
Flow of gases -- Gas dynamics -- Mathematical models -- Molecular interactions -- Velocity distribution -- Arc discharges -- Discharge column -- Magnetogasdynamics -- Magnetic fields
Аннотация: An unsteady-state three-dimensional numerical model of radiation magnetogasdynamics is used to calculate the structure of an arc discharae which interacts with an external transverse maonetic field and transverse gas flow. The velocity field and the distribution of gas temperature obtained as a result of calculations agree with experimental data. The difference between the calculated and measured values of temperature in the discharge column is approximately 5%.

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Держатели документа:
Russian Acad Sci, Siberian Div, Inst Computat Modeling, Krasnoyarsk 660036, Russia
ИВМ СО РАН
Institute of Computational Modeling, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Nesterov, D. A.; Васильев, Евгений Николаевич
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15.

Peculiarities of Alfven wave propagation along a nonuniform magnetic flux tube / N. V. Erkaev [et al.] // Phys. Plasmas. - 2005. - Vol. 12, Is. 1. - Ст. 12905, DOI 10.1063/1.1833392. - Cited References: 18 . - ISSN 1070-664X

РУБ Physics, Fluids & Plasmas
Рубрики:
HYDROMAGNETIC-WAVES
   TRANSFER EVENTS
   FIELD
   SLOW
Кл.слова (ненормированные):
Algebra -- Approximation theory -- Boundary conditions -- Electric conductivity -- Electric field effects -- Integral equations -- Magnetic flux -- Magnetohydrodynamics -- Perturbation techniques -- Polarization -- Vectors -- Velocity measurement -- Alfven wave propagation -- Axial symmetry -- Magnetic flux tubes -- Magnetosonic pulses -- Wave propagation
Аннотация: Within the framework of the assumption of large azimuthal wave numbers, the equations for Alfven and slow magnetosonic waves are obtained using frozen-in material coordinates. These equations are specified for the case of a nonuniform magnetic field with axial symmetry. Assuming a meridional polarization of the magnetic field and velocity perturbations, the effects of Alfven wave propagation are analyzed which are related to geometric characteristics of a nonuniform magnetic field: (a) A finite curvature radius of the magnetic field lines and (b) convergence of magnetic field lines. The interaction between the Alfven and magnetosonic waves is found to be strongly dependent on the curvature radius of the magnetic tube and the local plasma beta parameter. The electric field amplitude and the length scale of a wave front are found to increase very strongly in the course of the Alfven wave propagation along a converging magnetic flux tube. Also studied is a temporal decrease of the wave perturbations which is caused by dissipation at the conducting boundary. (C) 2005 American Institute of Physics.

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Держатели документа:
Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia
Austrian Acad Sci, Inst Space Res, A-8042 Graz, Austria
ИВМ СО РАН
Intitute of Computational Modelling, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
State University of Krasnoyarsk, Krasnoyarsk 660041, Russian Federation
Institute of Physics, State University, St. Petersburg 198504, Russian Federation
Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria

Доп.точки доступа:
Erkaev, N. V.; Еркаев, Николай Васильевич; Shaidurov, V. A.; Semenov, V. S.; Langmayr, D.; Biernat, H. K.
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16.

Isotope velocity differentiation in thin carbon nanotubes through quantum diffusion / A. S. Fedorov [et al.] // Europhys. Lett. - 2003. - Vol. 63, Is. 2. - P. 254-260, DOI 10.1209/epl/i2003-00512-5. - Cited References: 17 . - ISSN 0295-5075

РУБ Physics, Multidisciplinary
Рубрики:
MOLECULAR-DYNAMICS
   TRANSITIONS
   TRANSPORT
   ENERGY
Аннотация: An approach is proposed to evaluate the average velocities of adsorbate molecules in one-dimensional nanopore, when quantum tunneling between neighboring potential minima leads to nonzero velocity. The approach is used to calculate the hydrogen isotope molecule (H-2, D-2, T-2) velocities in ultrathin carbon single-wall nanotubes (SWNT) (3, 3) and (6, 0). It is shown that the isotope mass difference leads to large differences of the quantum tunneling value and large differences of the average molecule velocities, especially inside the tube (6, 0). It is shown that different tube chirality leads to drastically different velocities of adsorbate molecules, even if the diameters of both nanotubes do not differ significantly.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenski Inst Phys, Krasnoyarsk 660036, Russia
Univ Vienna, Inst Mat Phys, Vienna, Austria
ИФ СО РАН
Kirenski Institute of Physics, Siberian Branch, Russian Academy of Science, Krasnoyarsk 660036, Russian Federation
Institut fur Materialphysik, Universitat Wien, Wien, Austria

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Avramov, P. V.; Аврамов, Павел Вениаминович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Kresse, G.
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17.

Dissipative chaos in semiconductor superlattices / K. N. Alekseev [et al.] // Phys. Rev. B. - 1996. - Vol. 54, Is. 15. - P. 10625-10636, DOI 10.1103/PhysRevB.54.10625. - Cited References: 89 . - ISSN 0163-1829

РУБ Physics, Condensed Matter
Рубрики:
NEGATIVE DIFFERENTIAL CONDUCTIVITY
   INJECTED SIGNAL
   BLOCH OSCILLATIONS
   COLLECTIVE EXCITATIONS
   DETERMINISTIC CHAOS
   MINIBAND TRANSPORT
   SURFACE-PLASMONS
   TIME-SERIES
   LASER
   VELOCITY
Аннотация: We consider the motion of ballistic electrons in a miniband of a semiconductor superlattice (SSL) under the influence of an external, time-periodic electric field. We use a semiclassical, balance-equation approach, which incorporates elastic and inelastic scattering (as dissipation) and the self-consistent field generated by the electron motion. The coupling of electrons in the miniband to the self-consistent held produces a cooperative nonlinear oscillatory mode which, when interacting with the oscillatory external field and the intrinsic Bloch-type oscillatory mode, can lead to complicated dynamics, including dissipative chaos. For a range of values of the dissipation parameters we determine the regions in the amplitude-frequency plane of the external field in which chaos can occur. Our results suggest that for terahertz external fields of the amplitudes achieved by present-day free-electron lasers, chaos may be observable in SSL's. We clarify the nature of this interesting nonlinear dynamics in the superlattice-external-field system by exploring analogies to the Dicke model of an ensemble of two-level atoms coupled with a resonant cavity field, and to Josephson junctions.

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Держатели документа:
LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
ИФ СО РАН

Доп.точки доступа:
Alekseev, K. N.; Berman, G. P.; Campbell, D. K.; Cannon, E. H.; Cargo, M. C.
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18.

The impact of cavitation-activated water on combustion dynamics and environmental characteristics of coal-water slurry fuel / O. P. Stebeleva [et al.] // IOP Conf. Ser.: Mater. Sci. Eng. - 2019. - Vol. 537: International Workshop on Advanced Technologies in Material Science, Mechanical and Automation Engineering - MIP: Engineering-2019 (4 April 2019 through 6 April 2019) Conference code: 149243, Is. 6. - Ст. 062056, DOI 10.1088/1757-899X/537/6/062056. - Cited References: 8
Рубрики:
Chemical, Ecological and Power Engineering
Кл.слова (ненормированные):
Angular velocity -- Cavitation -- Coal -- Conservation -- Dynamics -- Ecology -- Fuels -- Ignition -- Water treatment
Аннотация: Among the new coal technologies the burning of low-grade coal in the form of coal-water slurry fuel (CWSF) is of a great interest. The basis of CWSF is a highly concentrated coal-water slurry consisting of finely ground coal, water or other liquid and plasticizing agents. The development of CWSF technology is highly relevant for solving global problems of resource conservation and ecology. The study is dedicated to CWSF properties with respect to Kansk-Achinsk coal and water. This paper presents the results of the influence of CWSF's preliminary cavitation water treatment on the combustion dynamics of fuel, (including the features of the combustion temperature trends, delayed ignition time and time of complete combustion) and on its environmental characteristics. A rotary-type hydrodynamic oscillator at high angular velocity (10000 rpm) was used in supercavitation mode. It is shown that the technology of cavitation water treatment leads to a change in the dynamics of CWSF's combustion and to an additional decrease in NOx emissions by 1.6 times, CO2 by 1.3 times.

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Держатели документа:
Siberian Federal University, 79, Svobodnyy Ave, Krasnoyarsk, 660049, Russian Federation
Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, L.V. Kirensky Institute of Physics, SB RAS, 50 Akademgorodok, Krasnoyarsk, 660021, Russian Federation
National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation

Доп.точки доступа:
Stebeleva, O. P.; Kashkina, L. V.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Nikitin, S. L.; Valiullin, T. R.; International Workshop on Advanced Technologies in Material Science, Mechanical and Automation Engineering(2019 ; April ; 4-6 ; Krasnoyarsk, Russian Federation)
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19.

    Zobov, V. E.
    Effect of degradation processes caused by a small perturbation on the growth of the average cluster size of correlated spins in multiple quantum NMR spectroscopy of solids / V. E. Zobov, A. A. Lundin // Appl. Magn. Reson. - 2021. - Vol. 52. Is. 7. - P. 879–892, DOI 10.1007/s00723-021-01342-1. - Cited References: 33. - The study is funded by the Ministry of Science and Higher Education of the Russian Federation in the framework of the State assignment, State registration number AAAA-A19-119012890064-7 . - ISSN 0937-9347
   Перевод заглавия: Влияние процессов деградации, вызванных малым возмущением, на рост среднего размера кластера коррелированных спинов в многоквантовой ЯМР спектроскопии твердых тел
Кл.слова (ненормированные):
Nuclear magnetic resonance spectroscopy -- Average size -- Cluster sizes -- Degradation process -- Multiple quantum NMR spectroscopy -- Orthogonal operators -- Over-complete -- Small perturbations -- Velocity ratio -- Cluster analysis
Аннотация: Multiple quantum (MQ) NMR spectroscopy of solids allows one to observe the growth and decay of multispin correlations. As a rule, the average size of the cluster of correlated spins is extracted from the width of the MQ spectrum. In the present article, the size distribution of such clusters is explored. To obtain the above distribution, the solutions for the amplitudes of the decomposition over complete sets of orthogonal operators for the two different models were used. By means of these models, we have taken into account the dependence of cluster degradation (the degradation of a cluster means, e.g., destruction of correlations in cluster or loss of particles in it) through two positions. The first one defines by the cluster size while the second one depends on the MQ coherence order of the cluster. It is shown that in dependence of the relation the rates of these degradation processes, the width of the MQ spectrum carries different information. If the first process is faster that the second one, then the width of the MQ spectrum is still determined by the average cluster size. When the velocity ratio becomes inverse, the width of the MQ spectrum takes on a smaller value, which is a consequence of the faster degradation of the MQ spectrum components with large orders of coherence.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117977, Russian Federation

Доп.точки доступа:
Lundin, A. A.; Зобов, Владимир Евгеньевич
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20.

    Negative group velocity and three-wave mixing in dielectric crystals / M. I. Shalaev [et al.] // Opt. Lett. - 2011. - Vol. 36, Is. 19. - P. 3861-3863, DOI 10.1364/OL.36.003861. - Cited Reference Count: 15. - Гранты: This work was supported in part by the Russian Federal Program on Science, Education and Innovation under Grant No. 2010-121-102-018, by the Presidium of the Russian Academy of Sciences under Grant No. 27.1, by the Siberian Division of the Russian Academy of Sciences under Integration Project No. 5, and by the U.S. National Science Foundation (NSF) under Grant ECCS-1028353. - Финансирующая организация: Russian Federal Program on Science, Education and Innovation [2010-121-102-018]; Presidium of the Russian Academy of Sciences [27.1]; Siberian Division of the Russian Academy of Sciences [5]; U.S. National Science Foundation (NSF) [ECCS-1028353] . - ISSN 0146-9592
Рубрики:
INDEX METAMATERIALS
   PARAMETRIC AMPLIFICATION
   2ND-HARMONIC GENERATION
   OSCILLATOR
Кл.слова (ненормированные):
negative group velocity -- negative-index -- non-linear optical -- optical parametric amplification -- plasmonic -- three wave mixing -- electromagnetic waves -- electromagnetism -- metamaterials -- photonic devices -- light velocity
Аннотация: We investigate extraordinary features of optical parametric amplification of Stokes electromagnetic waves that originate from the three-wave mixing of a backward phonon wave with negative group velocity and two ordinary electromagnetic waves. Such properties were earlier shown to exist only in plasmonic negative-index metamaterials that are very challenging to fabricate. Nonlinear optical photonic devices with properties similar to those predicted for negative-index metamaterials are proposed. (C) 2011 Optical Society of America

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Держатели документа:
Univ Wisconsin, Stevens Point, WI 54481 USA
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Shalaev, M.I.; Slabko, V.V.; Myslivets, S. A.; Мысливец, Сергей Александрович; Popov, A.K.
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