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Готові списки джерел за темами / Quasi-electrostatic waves

Добірка наукової літератури з теми "Quasi-electrostatic waves"

Автор: Grafiati

Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Quasi-electrostatic waves"

1

Moradi, Afshin. "Longitudinal quasi-electrostatic waves in hyperbolic metasurfaces." Physics Letters A 391 (March 2021): 127103. http://dx.doi.org/10.1016/j.physleta.2020.127103.

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2

Sazhin, S. S. "Whistler-mode polarization in a hot anisotropic plasma." Journal of Plasma Physics 34, no. 2 (October 1985): 213–26. http://dx.doi.org/10.1017/s0022377800002804.

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Polarization of whistler-mode waves in a hot anisotropic plasma is considered in the two limiting cases of quasi-longitudinal and quasi-electrostatic propagation. It is pointed out that electron thermal motion never influences the phase of the propagating waves; the polarization of whistler-mode waves propagating along the magnetic field is totally independent of electron thermal motion. The deformation of polarization (in both electric and magnetic fields), of obliquely propagating whistler-mode waves could be, in principle, observed in magnetospheric conditions and thus could be used to estimate electron temperature and anisotropy. This deformation seems to be especially pronounced for the electric field polarization of quasi-electrostatic waves.

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3

Arshad, Kashif, M. Lazar, and S. Poedts. "Quasi-electrostatic twisted waves in Lorentzian dusty plasmas." Planetary and Space Science 156 (July 2018): 139–46. http://dx.doi.org/10.1016/j.pss.2017.10.013.

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4

Stewart, G. A. "Nonlinear electrostatic waves in equal-mass plasmas." Journal of Plasma Physics 50, no. 3 (December 1993): 521–36. http://dx.doi.org/10.1017/s0022377800017311.

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A study is made of electrostatic waves in a cold equal-mass plasma. Numerical simulation reveals that cold equal-mass plasmas are fundamentally unstable to such oscillations, in contrast to the behaviour of these waves in electron-ion plasmas. A quasi-linear analysis of the problem is performed and an analytic solution found that duplicates the early evolution of the plasma.

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5

Krasovsky, V. L., H. Matsumoto, and Y. Omura. "On the three-dimensional configuration of electrostatic solitary waves." Nonlinear Processes in Geophysics 11, no. 3 (July 2, 2004): 313–18. http://dx.doi.org/10.5194/npg-11-313-2004.

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Abstract. The simplest models of the electrostatic solitary waves observed by the Geotail spacecraft in the magnetosphere are developed proceeding from the concept of electron phase space holes. The technique to construct the models is based on an approximate quasi-one-dimensional description of the electron dynamics and three-dimensional analysis of the electrostatic structure of the localized wave perturbations. It is shown that the Vlasov-Poisson set of equations admits a wide diversity of model solutions of different geometry, including spatial configurations of the electrostatic potential similar to those revealed by Geotail and other spacecraft in space plasmas.

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6

Perraut, S., A. Roux, F. Darrouzet, C. de Villedary, M. Mogilevsky, and F. Lefeuvre. "ULF wave measurements onboard the Interball auroral probe." Annales Geophysicae 16, no. 9 (September 30, 1998): 1105–16. http://dx.doi.org/10.1007/s00585-998-1105-7.

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Abstract. The IESP experiment implemented onboard the Interball auroral probe measures the six components (3B, 3E) of the waves in the ULF range: 0.1–10 Hz and from time to time 0–30 Hz. Two different kinds of waves have been observed in the auroral region at altitudes between 10 000 and 20 000 km: (1) electrostatic emissions which consist of quasi-monochromatic structures with frequencies above the oxygen gyrofrequency, superimposed on a wide band signal interpreted as a Doppler broadening, (2) electromagnetic wide band spectrum fluctuations. These emissions are interpreted as current-driven electromagnetic or electrostatic ion cyclotron waves. The electromagnetic/electrostatic character is controlled by the plasma parameter βi and by the O+ concentration.Key words. Magnetospheric physics · Auroral phenomena · Plasma waves and instabilities · Interball Auroral probe

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7

Lundin, B., C. Krafft, G. Matthieussent, F. Jiricek, J. Shmilauer, and P. Triska. "Excitation of VLF quasi-electrostatic oscillations in the ionospheric plasma." Annales Geophysicae 14, no. 1 (January 31, 1996): 27–32. http://dx.doi.org/10.1007/s00585-996-0027-5.

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Abstract. A numerical solution of the dispersion equation for electromagnetic waves in a hot magnetized collisionless plasma has shown that, in a current-free ionospheric plasma, the distortion of the electron distribution function reproducing the downward flow of a thermal electron component and the compensating upward flow of the suprathermal electrons, which are responsible for the resulting heat flux, can destabilize quasi-electrostatic ion sound waves. The numerical analysis, performed with ion densities and electron temperature taken from the data recorded by the Interkosmos-24 (IK-24, Aktivny) satellite, is compared with a VLF spectrum registered at the same time on board. This spectrum shows a wide frequency band emission below the local ion plasma frequency. The direction of the electron heat flux inherent to the assumed model of VLF emission generation is discussed

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8

Tsuchimoto, M., T. Honma, and K. Miya. "Dispersion relations of toroidal plasma surface waves in quasi-electrostatic state." IEEE Transactions on Plasma Science 19, no. 2 (April 1991): 428–32. http://dx.doi.org/10.1109/27.106842.

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9

Agapitov, O. V., A. V. Artemyev, D. Mourenas, V. Krasnoselskikh, J. Bonnell, O. Le Contel, C. M. Cully, and V. Angelopoulos. "The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration." Journal of Geophysical Research: Space Physics 119, no. 3 (March 2014): 1606–26. http://dx.doi.org/10.1002/2013ja019223.

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10

Oks, Eugene, Elisabeth Dalimier, and Paulo Angelo. "A Supersensitive Method for Spectroscopic Diagnostics of Electrostatic Waves in Magnetized Plasmas." Plasma 4, no. 4 (December 10, 2021): 780–88. http://dx.doi.org/10.3390/plasma4040040.

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For relatively strong magnetic fields, hydrogen atoms can have delocalized bound states of almost macroscopic dimensions. Therefore, such states are characterized by a Giant Electric Dipole Moment (GEDM), thus making them very sensitive to an external electric field. We considered the manifestations of the GEDM states in hydrogen spectral line profiles in the presence of a quasimonochromatic electrostatic wave of a frequency ω in a plasma. We demonstrated that in this situation, hydrogen spectral lines can exhibit quasi-satellites, which are the envelopes of Blochinzew-type satellites. We showed that the distinctive feature of such quasi-satellites is that their peak intensity is located at the same distance from the line center (in the frequency scale) for all hydrogen spectral lines, the distance being significantly greater than the wave frequency ω. At the absence of the GEDM (and for relatively strong electrostatic waves), the maxima of the satellite envelopes would be at different distances from the line center for different hydrogen lines. We demonstrated that this effect would constitute a supersensitive diagnostic method for measuring the amplitude of electrostatic waves in plasmas down to ~10 V/cm or even lower.

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Більше джерел

Частини книг з теми "Quasi-electrostatic waves"

1

"Quasi-electrostatic approximation." In Whistler-mode Waves in a Hot Plasma, 121–43. Cambridge University Press, 1993. http://dx.doi.org/10.1017/cbo9780511525094.007.

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2

I. Sotnikov, Vladimir. "Parametric Interaction of VLF and ELF Waves in the Ionosphere." In Plasma Science and Technology. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.100009.

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In this Chapter we analyze a non-linear parametric interaction between Very Low Frequency (VLF) and Extremely Low Frequency (ELF) waves in the ionosphere. We demonstrate that nonlinear parametric coupling between quasi-electrostatic Lower Oblique Resonance (LOR) and ELF waves significantly contributes to the VLF electromagnetic whistler wave spectrum. Analytical and numerical results are compared with experimental data obtained during active space experiments and satellite data. These data clearly show that presence of VLF waves in the region of plasmasphere boundary layer, where there are no injected due to substorm/storm activity energetic electrons with energies of tens keV can strongly affect the radiation belt boundary.

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3

Shin, K., H. Kojima, H. Matsumoto, and T. Mukai. "Electrostatic Quasi-Monochromatic Waves Downstream of the Bow Shock: Geotail Observations." In Frontiers in Magnetospheric Plasma Physics - Celebrating 10 Years of Geotail Operation, Proceedings of the 16th COSPAR Colloquium held at the Institute of Space and Astronautical Science (ISAS), 293–96. Elsevier, 2005. http://dx.doi.org/10.1016/s0964-2749(05)80044-7.

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4

Benisty, Henri, Jean-Jacques Greffet, and Philippe Lalanne. "Fundamental concepts of near-field optics." In Introduction to Nanophotonics, 275–90. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780198786139.003.0010.

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The concept of evanescent waves, which plays a key role in the description of the electromagnetic field at the nanoscale, is introduced in the first section. The second section offers an alternative introduction to near-field optics by examining the radiation of an electric dipole. These two sections can also be viewed as a discussion of the concepts of near field either in Fourier space (evanescent waves) or in direct space (dipole radiation). In the third section, we establish a connection between the quasi-electrostatic and quasi-magnetostatic approximations familiar in the regime of low frequencies and the near-field regime used in optics for TE and TM polarization. Finally, in the last part of the chapter, we highlight some particular properties of the near field. It will be seen that the familiar concepts of phase, Fresnel reflection factor, field structure, polarization need to be revisited in the near field.

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Тези доповідей конференцій з теми "Quasi-electrostatic waves"

1

Shirokov, Evgenii A. "Scattering of Quasi-Electrostatic Waves by a Conducting Cylinder in Hyperbolic Media." In 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC). IEEE, 2019. http://dx.doi.org/10.23919/ursiap-rasc.2019.8738623.

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2

Shirokov, Evgenii A., and Andrei G. Demekhov. "Reception of Quasi-Electrostatic Waves by Dipole Antennas in a Resonant Magnetoplasma." In 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2019. http://dx.doi.org/10.1109/iceaa.2019.8879144.

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3

Kazansky, P. G., and V. Pruneri. "Electric Field Poling Of Quasi-Phase-Matched Optical Fibres." In Nonlinear Guided Waves and Their Applications. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/nlgw.1996.suc.1.

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Ten years have passed since the discovery of photoinduced quasi-phase-matched second harmonic generation in optical fibres [1-3]. However, until fairly recently, second harmonic generation in optical fibres has been more of scientific than practical interest, owing to the low levels of induced nonlinearity (~10-3 pm/V, which is four orders of magnitude less than in inorganic crystals, e.g. lithium niobate). The mystery of photoinduced χ(2) gratings was finally solved on the basis of the coherent photogalvanic effect [4]: a high (104-5 V/cm) spatially oscillating electrostatic field appears in glass as a result of charge separation induced by coherent photocurrent, oscillating with a period determined by the coherence length; this electric field produces a quasi-phase-matching χ(2) grating in proportion to χ(3). The conversion efficiency reported in the first experiments on photoinduced SHG-~ 5 % from a peak pump power of ~ 20 kW-is still among the highest conversion efficiencies achieved so far in optical fibres. The reasons for these relatively high conversion efficiencies has to be searched in the long length (tens of centimetres) and good uniformity of the photoinduced gratings.

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4

Gospodchikov, E. D., A. G. Kutlin та A. G. Shalashov. "Coupling electromagnetic and quasi-electrostatic waves in electron cyclotron frequency range in high-β devices". У OPEN MAGNETIC SYSTEMS FOR PLASMA CONFINEMENT (OS2016): Proceedings of the 11th International Conference on Open Magnetic Systems for Plasma Confinement. Author(s), 2016. http://dx.doi.org/10.1063/1.4964172.

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5

Shirokov, Evgenii A. "Numerical Analysis of Antenna Excitation of Quasi-Electrostatic Waves: Application to Probing of the Near-Earth Plasma." In 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC). IEEE, 2018. http://dx.doi.org/10.23919/ursi-at-rasc.2018.8471333.

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6

Shirokov, Evgenii A. "Scattering of an Obliquely Incident Plane Quasi-Electrostatic Wave by a Metal Cylinder in a Magnetoplasma." In 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS). IEEE, 2020. http://dx.doi.org/10.23919/ursigass49373.2020.9232317.

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7

Nagulu, Aravind, Mykhailo Tymchenko, Andrea Alu, and Harish Krishnaswamy. "Ultra Compact, Ultra Wideband, DC-1GHz CMOS Circulator Based on Quasi-Electrostatic Wave Propagation in Commutated Switched Capacitor Networks." In 2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2020. http://dx.doi.org/10.1109/rfic49505.2020.9218322.

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