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Общее количество найденных документов : 117
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Berman G. P., Kolovsky A. R.
Заглавие : Structure and stability of the quasi-energy spectrum of 2 interacting quantum non-linear resonances
Место публикации : Phys. Lett. A. - 1983. - Vol. 95, Is. 1. - P.15-18. - ISSN 0375-9601, DOI 10.1016/0375-9601(83)90768-5
Примечания : Cited References: 5
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : IGNATCHENKO V. A., ISKHAKOV R. S.
Заглавие : CORRELATION-FUNCTIONS OF RANDOM ANISOTROPY AND THE PROBLEM OF FERROMAGNET STATE STABILITY
Место публикации : Journal de Physique. - 1988. - Vol. 49, Is. C-8. - P.1245-1246. - ISSN 0302-0738, DOI 10.1051/jphyscol:19888565
Примечания : Cited References: 8
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Beloshapkin V. V., Berman G. P., Tretyakov A. G.
Заглавие : Stability of space structures and soliton-antisoliton pair annihilation in the discrete PHI-4-model
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1989. - Vol. 95, Is. 2. - P723-731. - ISSN 0044-4510
Примечания : Cited References: 11
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ovchinnikov S. G., Burkova L. V., Seredkin V. A., Yakovchuk V. Y.
Заглавие : An analysis of the mechanism of Kerr effect enhancement in Mn/Dy/Bi
Место публикации : Phys. Solid State: AMER INST PHYSICS, 1999. - Vol. 41, Is. 1. - P80-86. - ISSN 1063-7834, DOI 10.1134/1.1130733
Примечания : Cited References: 35
Предметные рубрики: ELECTRONIC-STRUCTURE
THIN-FILMS
MAGNETIC-PROPERTIES
RARE-EARTH
MAGNETOOPTICAL PROPERTIES
MNBI FILMS
STABILITY
GD
Аннотация: A study is reported of the structural, magnetic, and magneto-optic properties of Mn/Dy/Bi films obtained by multilayer technology. The maximum Kerr rotation angle in such films is shown to be theta(k) = 2.25 degrees. Possible reasons for such a large Kerr effect enhancement are considered, namely, an increase in the 6p - 3d transition probability caused by symmetry distortion, polarization of the Bi6p band, and a change in the density of states near the Fermi level. The latter reason has been analyzed by simulating the electronic structure of Mn/Dy/Bi through superposition of Dy levels on the MnBi band structure. This approach has revealed possible additional transitions which may be induced by the presence of a Dy buffer and could contribute to the Kerr magneto-optic effect. (C) 1999 American Institute of Physics. [S1063=7834(99)02001-8].
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Erkaev N. V., Vogl D. F., Biernat H. K.
Заглавие : Solution for jump conditions at fast shocks in an anisotropic magnetized plasma
Место публикации : J. Plasma Phys. - 2000. - Vol. 64. - P.561-578. - ISSN 0022-3778, DOI 10.1017/S002237780000893X
Примечания : Cited References: 10
Предметные рубрики: MAGNETOSHEATH
Ключевые слова (''Своб.индексиров.''): magnetic anisotropy--magnetic field effects--magnetohydrodynamics--plasma sheaths--plasma shock waves--plasma stability--pressure effects--thermal effects--alfven mach number--anisotropic magnetized plasma--jump condition--magnetoplasma
Аннотация: We study the magnetic field and plasma parameters downstream of a fast shock as functions of normalized upstream parameters and the rate of pressure anisotropy (defined as the ratio of perpendicular to parallel pressure). We analyse two cases: with the shock (i) perpendicular and (ii) inclined with respect to the magnetic field. The relations on the fast, shock in a magnetized anisotropic plasma are solved taking into account the criteria for the mirror instability and firehose instability bounding the pressure anisotropy downstream of the shock. Our analysis shows that the parallel pressure and the parallel temperature as well as the tangential component of the velocity are the parameters that are most sensitive to the rate of pressure anisotropy. The variations of the other parameters, namely density, normal velocity, tangential component of the magnetic field, perpendicular pressure, and perpendicular temperature are much less pronounced, in particular when the perpendicular pressure exceeds the parallel pressure. The variations of all parameters increase substantially for a very low rate of anisotropy, which is bounded by the firehose instability in the case of inclined shocks. Using the criterion for mirror instability as a closure relation for the jump conditions at the fast shock, we obtain the plasma parameters and the magnetic field downstream of the shock as functions of the Alfven Mach number. For each Alfven Mach number, the criterion for mirror instability determines the minimum jumps in such parameters as density, tangential magnetic field component, parallel pressure, and temperature. and determines the maximum values of the velocity components and the perpendicular temperature. Ideal anisotropic magnetohydrodynamics (MHD) has wide applications for space plasma physics. Observations of the field and plasma behaviour in the solar wind as well as in the Earth's magnetosheath have highlighted the need for an MHD model where the plasma pressure is treated as a tensor.
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6.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vtyurin A. N., Goryainov S. V., Krylov A. S., Krylova S. N., Shefer A. D., Zamkova N. G., Zinenko V. I.
Заглавие : Raman spectra and pressure-induced lattice instabilities in RbMnCl3 crystal
Разночтения заглавия :авие SCOPUS: Raman spectra and pressure-induced lattice instabilities in RbMnCl 3 crystal
Место публикации : 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA): WILEY-V C H VERLAG GMBH, 2004. - 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA). - P3097-3100. - ISBN 3-527-40588-7, DOI 10.1002/pssc.200405332
Примечания : Cited References: 14
Предметные рубрики: PHASE-TRANSITION
SPECTROSCOPY
Ключевые слова (''Своб.индексиров.''): frequencies--hydrostatic pressure--mathematical models--parameter estimation--raman scattering--spectrometers--stability--ambient conditions--anomalies--lattice instabilities--structural units--rubidium compounds
Аннотация: Raman scattering spectra of the RbMnCl3 crystal have been studied under ambient conditions and under high hydrostatic pressure. The results produced have been interpreted with the ab initio model. The experimental data agree well with the estimated values in the low frequency range and show a slightly worse agreement at higher frequencies. A phase transition from the hexagonal phase to the perovskite phase predicted earlier within the same model was observed under high pressure (above 0.7 GPa) and new transitions to lower symmetry phases were found at higher pressures (1.1 GPa and 5 GPa). (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Langmayr D., Biernat H. K., Erkaev N. V.
Заглавие : Influence of kappa-distributed ions on the two-stream instability
Разночтения заглавия :авие SCOPUS: Influence of κ-distributed ions on the two-stream instability
Место публикации : Phys. Plasmas: AMER INST PHYSICS, 2005. - Vol. 12, Is. 10. - Ст.102103. - ISSN 1070-664X, DOI 10.1063/1.2065370
Примечания : Cited References: 30
Предметные рубрики: QUASI-PERPENDICULAR SHOCKS
FIELD STREAMING INSTABILITY
DISPERSION FUNCTION
MIRROR INSTABILITY
SPACE PLASMAS
EQUILIBRIUM
Ключевые слова (''Своб.индексиров.''): electromagnetic wave propagation--electrostatics--magnetism--magnetization--growth rate--modified two-stream instability (mtsi)--two-stream instability--plasma stability
Аннотация: This paper is the first approach for analyzing the influence of kappa-distributed particles on the modified two-stream instability (MTSI). It is assumed that the plasma consists of a magnetized Maxwellian electron contribution and unmagnetized kappa-distributed ions drifting across the electrons. Within an electrostatic approximation, the influence of the kappa parameter on the maximum growth rate of the MTSI is evaluated for the special case of parallel drift velocity and wave propagation.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Frank A. M.
Заглавие : Shear driven solitary waves on a liquid film
Место публикации : Phys. Rev. E: AMERICAN PHYSICAL SOC, 2006. - Vol. 74, Is. 6. - Ст.65301. - ISSN 1539-3755, DOI 10.1103/PhysRevE.74.065301
Примечания : Cited References: 21
Предметные рубрики: INCLINED CHANNEL
FLOWS
DYNAMICS
STABILITY
Ключевые слова (''Своб.индексиров.''): gravity waves--laminar flow--navier stokes equations--reynolds number--shear waves--liquid films--solitary waves--traveling waves--wave amplitudes--thin films
Аннотация: Long nonlinear two-dimensional traveling waves on a film driven by laminar gas flow are investigated numerically via solving Navier-Stokes equations. The evolution of their shape, amplitude, and speed with increasing Reynolds number is studied. The existence of solitary waves is demonstrated. A comparison between shear driven and gravity-capillary waves is made and discussed. It is shown that shear driven waves as compared to gravity driven waves are much higher for equal film Reynolds numbers and much slower for equal wave amplitudes.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vasil'ev E. N., Nesterov D. A.
Заглавие : The spatial structure of a current layer in an MGD channel
Место публикации : High Temp.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2006. - Vol. 44, Is. 4. - P497-506. - ISSN 0018-151X, DOI 10.1007/s10740-006-0062-7
Примечания : Cited References: 9
Ключевые слова (''Своб.индексиров.''): electric discharges--flow of fluids--gas dynamics--high pressure effects--numerical methods--thermodynamic stability--current conducting channels--radiation gas dynamics--rayleigh taylor instability--channel flow
Аннотация: The numerical solution of an unsteady-state three-dimensional set of equations of radiation gas dynamics is used to investigate the process of formation of a current layer in an MGD channel. It is found that the structure of current layer and the integral characteristics of interaction at low and high pressures are different because of the different patterns of radiation (volume and surface, respectively). The processes of flow past the discharge region and the division of this region into several current-conducting channels because of the development of Rayleigh-Taylor instability result in a decrease in the efficiency of MGD interaction.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : 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., Biernat H. K., Holmstrom M., Lundin R., Barabash S.
Заглавие : Shear driven waves in the induced magnetosphere of Mars
Место публикации : Plasma Phys. Control. Fusion: IOP PUBLISHING LTD, 2008. - Vol. 50, Is. 7. - Ст.74018. - ISSN 0741-3335, DOI 10.1088/0741-3335/50/7/074018
Примечания : Cited References: 27
Предметные рубрики: SOLAR-WIND INTERACTION
KELVIN-HELMHOLTZ INSTABILITY
MARTIAN ATMOSPHERE
VELOCITY SHEAR
VENUS
PLASMA
MHD
IONOPAUSE
SIMULATIONS
BOUNDARY
Ключевые слова (''Своб.индексиров.''): 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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