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Journal articles on the topic 'Electron Cyclotron Waves'

Author: Grafiati

Published: 9 March 2023

Last updated: 19 July 2025

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1

Hoekzema, J. A. "Electron Cyclotron Waves." Fusion Science and Technology 45, no. 2T (2004): 211–16. http://dx.doi.org/10.13182/fst04-a485.

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2

Westerhof, Egbert. "Electron Cyclotron Waves." Fusion Science and Technology 49, no. 2T (2006): 195–201. http://dx.doi.org/10.13182/fst06-a1119.

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3

Egbert, Westerhof. "Electron Cyclotron Waves." Fusion Science and Technology 53, no. 2T (2008): 202–9. http://dx.doi.org/10.13182/fst08-a1706.

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4

Westerhof, Egbert. "Electron Cyclotron Waves." Fusion Science and Technology 57, no. 2T (2010): 214–21. http://dx.doi.org/10.13182/fst10-a9412.

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5

Westerhof, Egbert. "Electron Cyclotron Waves." Fusion Science and Technology 61, no. 2T (2012): 304–11. http://dx.doi.org/10.13182/fst12-a13517.

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6

Tsurutani, B. T., B. Dasgupta, J. K. Arballo, G. S. Lakhina, and J. S. Pickett. "Magnetic field turbulence, electron heating, magnetic holes, proton cyclotron waves, and the onsets of bipolar pulse (electron hole) events: a possible unifying scenario." Nonlinear Processes in Geophysics 10, no. 1/2 (2003): 27–35. http://dx.doi.org/10.5194/npg-10-27-2003.

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Abstract. Two electron heating events have been identified on 20 May 1996 when Polar was in the polar cap/polar cusp boundary layer. The electron heating events were located within magnetic holes/cavities/bubbles and were accompanied by nonlinear ± 14 nT peak-to-peak (f ~ 0.6 to 0.7 fcp) obliquely propagating proton cyclotron waves. The electrons appear to be heated isotropically. Electric bipolar pulse (electron hole) onset events were also detected within the heating events. We propose a scenario which can link the above phenomena. Nonlinear Alfvén waves, generated through cusp magnetic reco

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7

Bharuthram, R., S. V. Singh, S. K. Maharaj, et al. "Do nonlinear waves evolve in a universal manner in dusty and other plasma environments?" Journal of Plasma Physics 80, no. 6 (2014): 825–32. http://dx.doi.org/10.1017/s0022377814000427.

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Using a fluid theory approach, this article provides a comparative study on the evolution of nonlinear waves in dusty plasmas, as well as other plasma environments, viz electron-ion, and electron-positron plasmas. Where applicable, relevance to satellite measurements is pointed out. A range of nonlinear waves from low frequency (ion acoustic and ion cyclotron waves), high frequency (electron acoustic and electron cyclotron waves) in electron-ion plasmas, ultra-low frequency (dust acoustic and dust cyclotron waves) in dusty plasmas and in electron-positron plasmas are discussed. Depending upon

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8

Ram, Abhay K., Kyriakos Hizanidis, and Richard J. Temkin. "Current drive by high intensity, pulsed, electron cyclotron wave packets." EPJ Web of Conferences 203 (2019): 01009. http://dx.doi.org/10.1051/epjconf/201920301009.

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The nonlinear interaction of electrons with a high intensity, spatially localized, Gaussian, electro-magnetic wave packet, or beam, in the electron cyclotron range of frequencies is described by the relativistic Lorentz equation. There are two distinct sets of electrons that result from wave-particle interactions. One set of electrons is reﬂected by the ponderomotive force due to the spatial variation of the wave packet. The second set of electrons are energetic enough to traverse across the wave packet. Both sets of electrons can exchange energy and momentum with the wave packet. The trapping

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9

Novak, O., R. Kholodov, and A. Fomina. "Role of Double Layers in the Formation of Conditions for a Polarization Phase Transition to the Superradiancestate in the Io Flux Tube." Ukrainian Journal of Physics 63, no. 8 (2018): 740. http://dx.doi.org/10.15407/ujpe63.8.740.

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A possibility of the electron phase transition into cyclotron superradiance mode in a vicinity of the Io flux tube foot in the Jovian magnetosphere has been considered. A high power of cyclotron superradiance allows it to be considered as the main mechanism of decameter Jupiter radiation generation in the form of S-bursts. It was found that the downward electron beams emitted by Io are able to create electric double layers in the form of shock waves. Such waves, when moving along the flux tube, accelerate electrons in the magnetosphere. As a result, the temperature of the electron plasma compo

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10

Zhou, Xiaowei, Dejin Wu, and Ling Chen. "Plasma Emission versus Electron Cyclotron Maser Emission due to Power-law Energetic Electrons in Differently Magnetized Coronal Plasmas." Astrophysical Journal 928, no. 2 (2022): 115. http://dx.doi.org/10.3847/1538-4357/ac5aae.

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Abstract By using self-consistent 2.5-dimensional particle-in-cell simulations, we study the excitation efficiency of electromagnetic waves by power-law energetic electrons with an anisotropic pitch-angle velocity distribution, which can simultaneously trigger the Langmuir and electron cyclotron maser instabilities, in differently magnetized coronal plasmas. It is found that the (transverse) electromagnetic waves can be excited much more efficiently in the case of strongly magnetized plasmas with ω ce > ω pe than that of weakly magnetized plasmas with ω ce < ω pe, where ω ce and ω pe are

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11

Ito, Asuka, and Ryuichiro Kitano. "Macroscopic quantum response to gravitational waves." Journal of Cosmology and Astroparticle Physics 2024, no. 04 (2024): 068. http://dx.doi.org/10.1088/1475-7516/2024/04/068.

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Abstract We study the excitation of a one-electron quantum cyclotron by gravitational waves. The electron in such as a penning trap is prepared to be at the lowest Landau level, which has an infinite degeneracy parameterized by the spread of the wave function in position space. We find that the excitation rate from the ground state to the first excited state is enhanced by the size of the electron wave function: an electron with a larger wave function feels gravitational waves more. As a consequence, we derive a good sensitivity to gravitational waves at a macroscopic one-electron quantum cycl

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12

Ito, Asuka, and Ryuichiro Kitano. "Macroscopic Quantum Response to Gravitational Waves." Journal of Physics: Conference Series 3017, no. 1 (2025): 012047. https://doi.org/10.1088/1742-6596/3017/1/012047.

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Abstract We study the excitation of a one-electron quantum cyclotron by gravitational waves. The electron in such as a penning trap is prepared to be at the lowest Landau level, which has an infinite degeneracy parameterized by the spread of the wave function in position space. We find that the excitation rate from the ground state to the first excited state is enhanced by the size of the electron wave function: an electron with a larger wave function feels gravitational waves more. As a consequence, we derive a good sensitivity to gravitational waves at a macroscopic one-electron quantum cycl

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13

Woodfield, E. E., R. B. Horne, S. A. Glauert, J. D. Menietti, and Y. Y. Shprits. "Electron acceleration at Jupiter: input from cyclotron-resonant interaction with whistler-mode chorus waves." Annales Geophysicae 31, no. 10 (2013): 1619–30. http://dx.doi.org/10.5194/angeo-31-1619-2013.

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Abstract. Jupiter has the most intense radiation belts of all the outer planets. It is not yet known how electrons can be accelerated to energies of 10 MeV or more. It has been suggested that cyclotron-resonant wave-particle interactions by chorus waves could accelerate electrons to a few MeV near the orbit of Io. Here we use the chorus wave intensities observed by the Galileo spacecraft to calculate the changes in electron flux as a result of pitch angle and energy diffusion. We show that, when the bandwidth of the waves and its variation with L are taken into account, pitch angle and energy

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14

Yang, Kwang-Sup. "Relativistic transverse modulational instability of two electron cyclotron waves." Journal of Plasma Physics 55, no. 3 (1996): 327–38. http://dx.doi.org/10.1017/s0022377800018882.

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The transverse modulational instabilities of two finite-amplitude electron-cyclotron waves due to the ponderomotive force and relativistic mass variation of electrons are considered using the coupled nonlinear Schrödinger equation model. The waves are modulationally unstable, with maximum growth rate larger than that of a single wave. The stable waves can be unstable by the effect of coupling. The instability is caused only by the mass variation of electrons, and the contribution of the ponderomotive force is negligibly small. The instability of copropagating waves has a convective nature and

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15

Zhang 张, Lijie 利杰, Dejin 德金 Wu 吴, Ling 玲. Chen 陈, and Zongjun 宗军 Ning 宁. "Electron Cyclotron Maser with Moderately Relativistic Electrons." Astrophysical Journal 977, no. 2 (2024): 260. https://doi.org/10.3847/1538-4357/ad95ea.

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Abstract Electron cyclotron maser (ECM) emission is an important coherent emission mechanism for the direct amplification of electromagnetic waves by nonthermal electrons in a magnetized plasma. This paper will report on our recent study on ECM emission by fast electron beams with moderately relativistic energy. The results show that, similar to the spontaneous emission by the magnetic cyclotron motion of energetic electrons in a magnetic field, the coherent emission also exhibits the characteristic of a gradual transition from harmonic emission to continuous emission as the energy of the ener

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16

Muschietti, Laurent, and Bertrand Lembège. "Two-stream instabilities from the lower-hybrid frequency to the electron cyclotron frequency: application to the front of quasi-perpendicular shocks." Annales Geophysicae 35, no. 5 (2017): 1093–112. http://dx.doi.org/10.5194/angeo-35-1093-2017.

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Abstract. Quasi-perpendicular supercritical shocks are characterized by the presence of a magnetic foot due to the accumulation of a fraction of the incoming ions that is reflected by the shock front. There, three different plasma populations coexist (incoming ion core, reflected ion beam, electrons) and can excite various two-stream instabilities (TSIs) owing to their relative drifts. These instabilities represent local sources of turbulence with a wide frequency range extending from the lower hybrid to the electron cyclotron. Their linear features are analyzed by means of both a dispersion s

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17

Tonoian, D. S., A. V. Artemyev, X. J. Zhang, M. M. Shevelev, and D. L. Vainchtein. "Resonance broadening effect for relativistic electron interaction with electromagnetic ion cyclotron waves." Physics of Plasmas 29, no. 8 (2022): 082903. http://dx.doi.org/10.1063/5.0101792.

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Relativistic electron scattering by electromagnetic ion cyclotron (EMIC) waves is one of the most effective mechanisms for >1 MeV electron flux depletion in the Earth's radiation belts. Resonant electron interaction with EMIC waves is traditionally described by quasi-linear diffusion equations, although spacecraft observations often report EMIC waves with intensities sufficiently large to trigger nonlinear resonant interaction with electrons. An important consequence of such nonlinear interaction is the resonance broadening effect due to high wave amplitudes. In this study, we quantify this

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18

Shukla, P. K., M. Y. Yu, and L. Stenflo. "Modulational instabilities of electron cyclotron waves." Physical Review A 34, no. 2 (1986): 1582–83. http://dx.doi.org/10.1103/physreva.34.1582.

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19

Alikaev, V. V., and V. V. Parail. "Current drive by electron cyclotron waves." Plasma Physics and Controlled Fusion 33, no. 13 (1991): 1639–56. http://dx.doi.org/10.1088/0741-3335/33/13/011.

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20

Narita, Y., E. Marsch, C. Perschke, K. H. Glassmeier, U. Motschmann, and H. Comişel. "Wave–particle resonance condition test for ion-kinetic waves in the solar wind." Annales Geophysicae 34, no. 4 (2016): 393–98. http://dx.doi.org/10.5194/angeo-34-393-2016.

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Abstract. Conditions for the Landau and cyclotron resonances are tested for 543 waves (identified as local peaks in the energy spectra) in the magnetic field fluctuations of the solar wind measured by the Cluster spacecraft on a tetrahedral scale of 100 km. The resonance parameters are evaluated using the frequencies in the plasma rest frame, the parallel components of the wavevectors, the ion cyclotron frequency, and the ion thermal speed. The observed waves show a character of the sideband waves associated with the ion Bernstein mode, and are in a weak agreement with the fundamental electron

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21

YANG, JIN-WEI, YI-PO ZHANG, XU LI, et al. "Suppression of runaway electrons during electron cyclotron resonance heating on HL-2A tokamak." Journal of Plasma Physics 76, no. 1 (2009): 75–85. http://dx.doi.org/10.1017/s0022377809990250.

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AbstractThe statistical analysis of heating effect and the cross-correlation analysis of both electron temperature and loop voltage have been done during electron cyclotron resonance heating (ECRH). The behavior of runaway electrons in the flat-top phase during ECRH are analyzed using experimental data. It is shown that the runaway population is indeed suppressed or even quenched when the toroidal electric field ET is reduced below the threshold electric field Eth by high-power and long-duration ECRH. The physical mechanism of runaway suppression is explored by the resonant interaction between

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22

Алексеев, П. С. "Магнитозвуковые волны в двумерной электронной ферми-жидкости". Физика и техника полупроводников 53, № 10 (2019): 1405. http://dx.doi.org/10.21883/ftp.2019.10.48298.9166.

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The properties of highly viscous fluids at high frequencies become similar to the properties of amorphous solids. In particular, it becomes possible to propagate not only longitudinal sound waves (plasmons for the case of an electron fluid), but also transverse sound waves associated with shear deformations. In this work, transverse sound waves at high frequencies in a twodimensional electron liquid in a magnetic field are studied. The consideration was carried out in the framework of the Landau Fermi-liquid model. It is shown that for a sufficiently large interaction between quasiparticles, t

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23

Lakhina, G. S., B. T. Tsurutani, and J. Pickett. "Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar." Nonlinear Processes in Geophysics 11, no. 2 (2004): 205–13. http://dx.doi.org/10.5194/npg-11-205-2004.

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Abstract. Two magnetic hole events observed by Polar on 20 May 1996 when it was in the polar cap/polar cusp boundary layer are studied. Low-frequency waves, consisting of nonlinear Alfvén waves and large amplitude (±14nT peak-to-peak) obliquely propagating proton cyclotron waves (with frequency f~0.6 to 0.7 fcp), accompanied by electric bipolar pulses (electron holes) and electron heating have been observed located within magnetic holes. It is shown that low-frequency waves can provide free energy to drive some high frequency instabilities which saturate by trapping electrons, thus, leading to

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24

WILLES, A. J., and P. A. ROBINSON. "Electron-cyclotron maser theory for extraordinary Bernstein waves." Journal of Plasma Physics 58, no. 1 (1997): 171–91. http://dx.doi.org/10.1017/s0022377897005874.

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Electron-cyclotron maser emission is investigated in the regime where wave growth in the electrostatic Bernstein modes dominates (ωp/Ωe>1.5). A semirelativistic growth rate is derived assuming that the wave dispersion is dominated by a cool background electron distribution and the instability is driven by a low-density hot loss-cone-like electron distribution. The properties of Bernstein wave growth are most strongly dependent on the relative temperatures of the hot and cool electron distributions. For Thot/Tcool[gsim ]10, the fastest growing Bernstein waves are produced at frequencies just

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25

Yao, Xin, Patricio A. Muñoz, Jörg Büchner, Jan Benáček, Siming Liu, and Xiaowei Zhou. "Wave Emission of Nonthermal Electron Beams Generated by Magnetic Reconnection." Astrophysical Journal 933, no. 2 (2022): 219. http://dx.doi.org/10.3847/1538-4357/ac7141.

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Abstract Magnetic reconnection in solar flares can efficiently generate nonthermal electron beams. The energetic electrons can, in turn, cause radio waves through microscopic plasma instabilities as they propagate through the ambient plasma along the magnetic field lines. We aim at investigating the wave emission caused by fast-moving electron beams with characteristic nonthermal electron velocity distribution functions (EVDFs) generated by kinetic magnetic reconnection: two-stream EVDFs along the separatrices and in the diffusion region, and perpendicular crescent-shaped EVDFs closer to the d

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26

Artekha, N. S., and D. R. Shklyar. "Dispersion Characteristics of Low-Frequency Electron Waves in a Magnetoactive Plasma of Arbitrary Density." Физика плазмы 49, no. 11 (2023): 1127–39. http://dx.doi.org/10.31857/s0367292123600838.

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The article studies waves in a collisionless magnetoactive plasma with frequencies much lower than the electron cyclotron frequency at an arbitrary ratio between the electron plasma and cyclotron frequencies. A general dispersion relation is obtained for the wave frequency as a function of the wave vector and the ratio of the plasma frequency to the cyclotron frequency. This relation is a bicubic equation with respect to frequency. Based on this equation, the existence domains of various wave modes depending on the specified parameter, their group velocity, polarization, and energy density are

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27

James, Litty, Lalita Jassal, and V. K. Tripathi. "Whistler and electron-cyclotron instabilities in a plasma duct." Journal of Plasma Physics 54, no. 1 (1995): 119–28. http://dx.doi.org/10.1017/s0022377800018377.

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A gyrating electron beam propagating through a planar plasma duct can excite a whistler wave or an electron-cyclotron wave, depending on the plasma- density profile of the duct and the energy of the beam. The gyrational motion of the electron beam supplies energy to the wave. In the case of a whistler wave the interaction occurs via coupling of the fast cyclotron beam mode (ω ≈ k2vb + ωc/γ0) to the electromagnetic whistler mode through the Weibel instability mechanism, whereas for an electron-cyclotron wave the coupling is through the negative-mass instability mechanism. It is seen that there

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28

Roth, I., M. Temerin, and M. K. Hudson. "Resonant enhancement of relativistic electron fluxes during geomagnetically active periods." Annales Geophysicae 17, no. 5 (1999): 631–38. http://dx.doi.org/10.1007/s00585-999-0631-2.

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Abstract. The strong increase in the flux of relativistic electrons during the recovery phase of magnetic storms and during other active periods is investigated with the help of Hamiltonian formalism and simulations of test electrons which interact with whistler waves. The intensity of the whistler waves is enhanced significantly due to injection of 10-100 keV electrons during the substorm. Electrons which drift in the gradient and curvature of the magnetic field generate the rising tones of VLF whistler chorus. The seed population of relativistic electrons which bounce along the inhomogeneous

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29

Ma, Hao-Jie, Hua-Sheng Xie, and Bo Li. "Simulations of energy deposition of electron cyclotron waves in a dipole-confined plasma based on ray trajectory." Physics of Plasmas 30, no. 4 (2023): 042502. http://dx.doi.org/10.1063/5.0133133.

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The energy deposition of electron cyclotron waves in a dipole-confined plasma is investigated for the RT-1 device, specifically including the effects of high-energy electrons and the electron Bernstein wave (EBW) excitation and absorption. Simulations of wave trajectories with various injection locations and angles indicate that the energy deposition of ordinary mode (O-mode) and extraordinary modes (X-mode) is small in low-temperature plasmas. The high-energy electrons in the plasma increase the energy deposition of the X-mode but have little effect on the O-mode. Meanwhile, the energy deposi

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30

Robinson, P. A. "Thermal effects on parallel-propagating electron cyclotron waves." Journal of Plasma Physics 37, no. 1 (1987): 149–62. http://dx.doi.org/10.1017/s0022377800012058.

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Thermal effects on the dispersion of right-handed (RH) electron cyclotron waves propagating parallel to a uniform, ambient magnetic field are investigated in the strictly non-relativistic (‘classical’) and weakly relativistic approximations for real frequency and complex wave vector. In each approximation, the two branches of the RH mode reconnect near the cyclotron frequency as the plasma temperature is increased or the density is lowered. This reconnection occurs in a manner different from that previously assumed at parallel propagation and from that at perpendicular propagation, giving rise

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31

Tsvyk, N. O. "THE DICHOTOMY OF THE MECHANISMS OF DECAMETER RADIO EMISSION FROM JUPITER: THE INFLUENCE OF STREAMER INHOMOGENEITIES AND MHD PERTURBATIONS IN THE SOURCE." Odessa Astronomical Publications 36 (December 4, 2023): 145–49. http://dx.doi.org/10.18524/1810-4215.2023.36.290182.

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There are analyzed a model of the source of DAM radiation bursts which are activated under the MHD waves excitation in the Jupiter lower magnetosphere in a presence of ionized streamer-like inhomogeneities of limited thickness (1-100 km). There was studied the formation of an anisotropic kinetic distribution of electrons, which leads to the generation of Jupiter DAM radiation bursts under the various scenarios. It was investigated the influence of gas-dust flows in the Io-Jupiter tube, the ionization processes and the diffusion effects in the streamer plasma to the creation the cone-type kinet

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32

Farina, Daniela. "Relativistic Dispersion Relation of Electron Cyclotron Waves." Fusion Science and Technology 53, no. 1 (2008): 130–38. http://dx.doi.org/10.13182/fst08-a1660.

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33

Shukla, P. K., and L. Stenflo. "Three-dimensional modulation of electron-cyclotron waves." Physics of Fluids 29, no. 8 (1986): 2479. http://dx.doi.org/10.1063/1.865541.

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34

Singh, D. P., U. P. Singh, and R. P. Singh. "Limiting wave growth for electron cyclotron waves." Earth, Moon, and Planets 64, no. 2 (1994): 145–54. http://dx.doi.org/10.1007/bf00604486.

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35

Tanaka, Masayoshi, Ryuji Nishimoto, Seiichiro Higashi, et al. "Overdense Plasma Production Using Electron Cyclotron Waves." Journal of the Physical Society of Japan 60, no. 5 (1991): 1600–1607. http://dx.doi.org/10.1143/jpsj.60.1600.

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36

Willes, A. J., and P. A. Robinson. "Electron-Cyclotron maser emission from streaming distributions." Journal of Plasma Physics 51, no. 1 (1994): 75–93. http://dx.doi.org/10.1017/s0022377800017402.

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Motivated by the need to explain observed elliptically polarized emission from Jupiter, the mechanism of electron-cyclotron maser emission is considered for drifting electron distributions, where the electrons stream with a non-zero mean velocity parallel to the magnetic field lines. An analytical expression for the semirelativistic growth rate is derived and its properties analysed in detail for waves generated in the magneto-ionic modes. The main features of the growth rate are discussed, on the basis of a geometric analysis using resonant ellipses.

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37

Kaur, Rajbir, R. S. Pandey, S. Kumar, and B. S. Tomar. "ELECTROMAGNETIC ELECTRON-CYCLOTRON WAVES WITH AC FIELD IN THE MAGNETOSPHERE." JOURNAL OF ADVANCES IN PHYSICS 5, no. 2 (2014): 757–66. http://dx.doi.org/10.24297/jap.v5i2.1938.

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In this paper the effect of externally injected beam of cold electrons on electromagnetic electron-cyclotron (EMEC) waves in the magnetosphere has been discussed. The investigation is conducted using the methodology of characteristic solution and considering kappa distribution function in the presence of AC field.Â The objective of present study is to examine the variation in growth rate of EMEC waves when temperature anisotropy, magnitude of AC field and number density of energetic particles varies. It is inferred that EMEC waves grow more significantly when propagating oblique to magnetic fi

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38

Huang, S. Y., M. Zhou, X. H. Deng, et al. "Kinetic structure and wave properties associated with sharp dipolarization front observed by Cluster." Annales Geophysicae 30, no. 1 (2012): 97–107. http://dx.doi.org/10.5194/angeo-30-97-2012.

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Abstract. Multiple dipolarization fronts (DFs) were observed by Cluster spacecraft in the magnetotail during a substorm. These DFs were kinetic structures, embedded in the bursty plasma flow, and moved earthward (mainly) and dawnward. Intense electric field, parallel and perpendicular currents were detected in the DF layer. These front layers were energy dissipation region (load region) where the energy of electromagnetic fields were transferred to the plasma thermal and kinetic energy. This dissipation was dominated by electrons. There were enhancements of plasma waves around the DF region: w

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39

Sugawa, Masao, and Reiji Sugaya. "Nonlinear Interaction between Electrostatic Electron Cyclotron Harmonic Waves and Electrons." Journal of the Physical Society of Japan 54, no. 4 (1985): 1339–47. http://dx.doi.org/10.1143/jpsj.54.1339.

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40

Sauvaud, J. A., M. Parrot, and E. Slominska. "Comment on "Comparative study on earthquake and ground based transmitter induced radiation belt electron precipitation at middle latitude" by Sideropoulos et al. (2011)." Natural Hazards and Earth System Sciences Discussions 1, no. 4 (2013): 3553–75. http://dx.doi.org/10.5194/nhessd-1-3553-2013.

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Abstract. We show that many, if not all, electron bursts claimed to be earthquake precursors by Sideropoulos et al. (2011) are due to the cyclotron resonance of electrons with monochromatic waves from VLF transmitters. The geographic distribution of the VLF-related electron bursts is established during a period in 2007, when the powerful NWC transmitter is off.

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41

Orefice, A. "Resonant interaction of electron cyclotron waves with a plasma containing arbitrarily drifting suprathermal electrons." Journal of Plasma Physics 34, no. 2 (1985): 319–26. http://dx.doi.org/10.1017/s0022377800002890.

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A relativistic treatment of the plasma dispersion functions and of the dielectric tensor for electron cyclotron electromagnetic waves is given for non-thermal plasmas where the electron distribution function can be represented as a combination of Maxwellians with arbitrary drifts along the magnetic field.

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42

Gao, Zhonglei, Wanxia Ye, Si Liu, et al. "Electron distribution-controlled electron cyclotron harmonic wave generation in the magnetosphere." Physics of Plasmas 30, no. 3 (2023): 032902. http://dx.doi.org/10.1063/5.0135320.

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Electron cyclotron harmonic (ECH) waves, contributing significantly to magnetospheric dynamics, usually appear as a series of harmonics between the multiples of electron gyrofrequency. Previous studies have demonstrated that ECH waves are the electron Bernstein mode excited by the electron loss cone distribution. To investigate how the electron distribution controls the frequency and wave normal angle of excited ECH waves, we derive a concise analytic formula for ECH growth rates using the bi-Maxwellian distribution. Parametric studies show that the expansion of the loss cone size could effect

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43

McKENZIE, JAMES F. "Wave dynamics of an electrojet: generalized Farley–Buneman instability." Journal of Plasma Physics 73, no. 5 (2007): 701–13. http://dx.doi.org/10.1017/s002237780600612x.

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AbstractIn this paper we generalize the classical Farley–Buneman (FB) instability to include space-charge effects and finite electron inertia. The former effect makes the ion-acoustic wave dispersive with the usual resonance appearing at the ion plasma frequency, but other than that the structure of the FB instability remains intact. However, the inclusion of the latter, finite electron inertia, gives rise to the propagating electron-cyclotron mode, albeit modified by collisions. In the presence of differential electron streaming relative to the ions, the interaction between this mode, attempt

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Viktorov, M., I. Izotov, E. Kiseleva, A. Polyakov, S. Vybin, and V. Skalyga. "Kinetic whistler instability in a mirror-confined plasma of a continuous ECR ion source." Physics of Plasmas 30, no. 2 (2023): 022101. http://dx.doi.org/10.1063/5.0133930.

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Kinetic instabilities in a dense plasma of a continuous electron cyclotron resonance (ECR) discharge in a mirror magnetic trap at the Gasdynamic Ion Source for Multipurpose Operation (GISMO) setup are studied. We experimentally define unstable regimes and corresponding plasma parameters, where the excitation of electromagnetic emission is observed, accompanied by the precipitation of energetic electrons from the magnetic trap. A comprehensive experimental study of the precipitating electron energy distribution and plasma electromagnetic emission spectra, together with theoretical estimates of

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Li, T. M., C. Li, W. J. Ding, and P. F. Chen. "Particle-in-cell Simulation of ³He Enrichment in Solar Energetic Particle Events." Astrophysical Journal 922, no. 1 (2021): 50. http://dx.doi.org/10.3847/1538-4357/ac2a40.

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Abstract 3He enrichment is one distinctive feature of impulsive solar energetic particle events. This study is designed to investigate the process of plasma wave–particle resonance, which plays a key role in selectively accelerating heavy ions. We apply a 1.5 dimensional particle-in-cell simulation to model the electron-beam–plasma interaction that generates electron and ion cyclotron waves, namely proton and 4He cyclotron waves, whose dispersions are dependent on the magnetization parameter α = ω pe/Ωce and the temperature ratio τ = T e /T p . The background particles, e.g., 3He and 4He, reso

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Robinson, P. A. "Electron cyclotron waves: dispersion and accessibility conditions in isotropic and anisotropic plasmas." Journal of Plasma Physics 35, no. 2 (1986): 187–207. http://dx.doi.org/10.1017/s0022377800011272.

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Dispersion and accessibility conditions for electron cyclotron waves are investigated for arbitrary weakly relativistic plasmas and for specific isotropic and loss-cone distributions. The transition between the cold plasma and vacuum dispersion relations is investigated as a function of temperature and density. The behaviour of mode structure (including mode coupling), cut-offs and resonances are also examined. Generalizations are obtained of earlier results which indicate that access by extraordinary waves to regions nearthe cyclotron layer from the low-field side is easier in weakly relativi

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Cavalcanti, C. J. H., R. S. Schneider, and L. F. Ziebell. "Electron-cyclotron absorption by inhomogeneous current-carrying plasmas." Journal of Plasma Physics 52, no. 2 (1994): 195–214. http://dx.doi.org/10.1017/s0022377800017864.

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We consider effects of inhomogeneity on the absorption of high-frequency electromagnetic waves, propagating at arbitrary angles relative to the magnetic field, by current-carrying plasmas. An inhomogeneous current is assumed to be immersed in an otherwise homogeneous background, and the absorption of fundamental electron-cyclotron waves is discussed, with emphasis on the dependence of the inhomogeneity effect on wave frequency and angle of propagation.

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Sauvaud, J. A., M. Parrot, and E. Slominska. "Comment on "Comparative study on earthquake and ground based transmitter induced radiation belt electron precipitation at middle latitude", by Sideropoulos et al. (2011)." Natural Hazards and Earth System Sciences 14, no. 1 (2014): 1–9. http://dx.doi.org/10.5194/nhess-14-1-2014.

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Abstract. We show that many, if not all, electron bursts with energy dispersion claimed to be earthquake precursors by Sideropoulos et al. (2011) are due to the cyclotron resonance of electrons with monochromatic waves from VLF transmitters. The geographic distribution of the VLF-related electron bursts is established during a period in 2007, when the powerful NWC transmitter is off and 20 more transmitters are operating.

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Ito, K., Y. Kiwamoto, T. Saito, and Y. Tatematsu. "Strong narrow-band electron cyclotron emission from a mirror plasma heated by electron cyclotron waves." Physics of Plasmas 7, no. 12 (2000): 4923–30. http://dx.doi.org/10.1063/1.1322556.

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Pasmanik, D. L., V. Y. Trakhtengerts, A. G. Demekhov, et al. "A quantitative model for cyclotron wave-particle interactions at the plasmapause." Annales Geophysicae 16, no. 3 (1998): 322–30. http://dx.doi.org/10.1007/s00585-998-0322-4.

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Abstract. The formation of a zone of energetic electron precipitation by the plasmapause, a region of enhanced plasma density, following energetic particle injection during a magnetic storm, is analyzed. Such a region can also be formed by detached cold plasma clouds appearing in the outer magnetosphere by restructuring of the plasmasphere during a magnetic storm. As a mechanism of precipitation, wave-particle interactions by the cyclotron instability between whistler-mode waves and electrons are considered. In the framework of the self-consistent equations of quasi-linear plasma theory, the d

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