Coupling of electrostatic ion cyclotron and ion acoustic waves in the solar wind

Sreeraj, T.; Singh, S. V.; Lakhina, G. S.

doi:10.1063/1.4960657

Cited by 17 publications

(8 citation statements)

References 66 publications

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“…Subsequently, Amin [12] carried out both analytical and numerical analyzes to examine the linear and nonlinear compressional Alfven waves in an electron-hole semiconductor plasmas and showed unique features involving the amplitude modulation and modulation instability. Influence of plasma parameters on the low frequency ion cyclotron and ion acoustic waves are investigated in [13]. More recently low frequency modes observed in lunar wake are focused in [14], kinetic Alfven waves excited by ion beam in the Earth's magnetosphere was studied in [15] to investigate the influence of plasma parameters on growth of low frequency waves, further it was shown in [16] that plasma parameters have significant signature on the helium cyclotron instability.…”

Section: Introductionmentioning

confidence: 99%

Low-frequency plasma waves in a radiative dusty magnetoplasma

et al. 2020

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The impact of electromagnetic (thermal) radiation on the dispersive low-frequency waves is examined in a radiative dusty magnetoplasma. For this purpose, a magneto-hydrodynamic model along with the Maxwell equations is employed to describe the three-component radiative dusty plasma that contains inertialess electrons, dynamical positive ions and negatively charged static dust particulates. The behavior of the electrostatic and electromagnetic waves significantly changes in a plasma medium when a radiation pressure is taken into consideration, as compared to the waves in vacuum. After seeking a plane wave solution, a general dispersion relation is obtained to investigate different limiting cases of the low-frequency modes propagating parallel, perpendicular and oblique to the external magnetic field direction both analytically and numerically. The calculations reveal that the usual thermal and acoustic speeds (cT, ca) do not remain constant even if the temperature is kept constant, because of the radiation pressure which strongly depends on the equilibrium number density as well. The present results may prove a useful understanding for the new features of the dispersive dust-ion-acoustic and compressional Alfven waves in astrophysical dusty magnetoplasmas.

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Section: Introductionmentioning

confidence: 99%

Low-frequency plasma waves in a radiative dusty magnetoplasma

et al. 2020

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“…Further, in the absence of electron beam (n b0 =0), one arrive at dispersion relation for electrostatic waves derived by Sreeraj et al [41] (cf equation ( 18)). In the section 3, the…”

Section: Theoretical Modelmentioning

confidence: 99%

“…In the absence of ambient magnetic field, the dispersion relation reduces to equation (6) of Sreeraj et al [27] for an unmagnetized plasma. If the number density of beam electrons in equation ( 8) is taken to be zero (n b0 =0), one arrives at dispersion relation for electrostatic waves derived by Sreeraj et al [41] for oblique propagation (their equation ( 6)).…”

Section: Theoretical Modelmentioning

confidence: 99%

Linear analysis of electrostatic waves in the lunar wake plasma

Sreeraj¹,

Singh²,

Lakhina³

2020

Phys. Scr.

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Propagation characteristics of electrostatic electron and ion cyclotron waves, ion- and electron- acoustic waves in a four-component magnetized plasma comprising of protons, doubly charged Helium ions, beam electrons and superthermal electrons following a kappa distribution are presented. The model supports 12 plasma modes: two electron cyclotron (modes 1 and 12), two electron acoustic (modes 2 and 11), two fast ion acoustic (modes 3 and 10), two slow ion acoustic (modes 4 and 9), two proton cyclotron (modes 5 and 8) and two Helium cyclotron (modes 6 and 7). At parallel propagation, with increase in electron beam speed, mode 11 first merges with slow ion acoustic mode 4 and then with fast ion acoustic mode 3 and drives them unstable. For oblique propagation and without the electron streaming, coupling of various plasma modes occurs and it weakens with increase in the angle of propagation. Further, for oblique propagation with finite electron beam velocity, merging as well as coupling of various plasma modes are observed. Growth rates as well as wave numbers of the excited slow and fast ion acoustic modes are much smaller in magnetized plasma than in an unmagnetized one. The results are relevant to observations of electrostatic waves in the lunar wake.

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“…[ 3 ] Experimental studies of ion‐acoustic waves (IAWs) in negative‐ion plasmas were reported by Song et al [ 4 ] and Wong et al [ 5 ] Linear and nonlinear properties of IAWs have been widely investigated theoretically by authors. [ 6–13 ] In the presence of dust impurities in the ordinary plasma, IAWs lead to the so‐called dust‐ion acoustic waves (DIAWs). [ 14 ] The propagation of DIAWs in an inhomogeneous dusty plasma was shown.…”

Section: Introductionmentioning

confidence: 99%

Multi‐dimensional instability of electrostatic solitary waves in a warm multi‐ion dust plasma

Gao

Wu²,

Duan

2021

Contributions to Plasma Physics

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Study of dust ion acoustic waves in a magnetized dusty plasmas composed of negatively or positively charged static dust, positive and negative ions, as well as kappa distribution electrons is presented. The Zakharov–Kuznetsov (ZK) equation is derived via reductive perturbation technique. The solitary wave solution of ZK equation is given and the multi‐dimensional instability of these solitary waves is investigated via small k perturbation method. The instability criterion and growth rate relying on obliqueness, superthermality, positive ion thermal pressure, relative ion number density, magnetic field strength, and direction cosines are discussed for five cases. The results are beneficial to understand different nonlinear characteristics of unstable electrostatic disturbances in laboratory and space plasmas.

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Coupling of electrostatic ion cyclotron and ion acoustic waves in the solar wind

Cited by 17 publications

References 66 publications

Low-frequency plasma waves in a radiative dusty magnetoplasma

Low-frequency plasma waves in a radiative dusty magnetoplasma

Linear analysis of electrostatic waves in the lunar wake plasma

Multi‐dimensional instability of electrostatic solitary waves in a warm multi‐ion dust plasma

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