Formation of electron kappa distributions due to interactions with parallel propagating whistler waves

Tao, X.; Lu, Quanming

doi:10.1063/1.4865574

Cited by 13 publications

(11 citation statements)

References 24 publications

(30 reference statements)

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“…Here we use a one-dimensional electromagnetic PIC simulation code [Tao and Lu, 2014;Tao, 2014], where field quantities are assumed to vary along z direction and three components of the velocity are retained. Here we use a one-dimensional electromagnetic PIC simulation code [Tao and Lu, 2014;Tao, 2014], where field quantities are assumed to vary along z direction and three components of the velocity are retained.…”

Section: Comparison Between Quasilinear Analysis and Pic Simulationmentioning

confidence: 99%

“…Before we analyze the saturation properties of broadband whistler mode waves, we compare the evolution of wave energy between PIC simulation and quasilinear theory for a case. Here we use a one-dimensional electromagnetic PIC simulation code [Tao and Lu, 2014;Tao, 2014], where field quantities are assumed to vary along z direction and three components of the velocity are retained. Only parallel propagating whistler mode waves are allowed, consistent with the assumption used in our quasilinear analysis.…”

Section: Comparison Between Quasilinear Analysis and Pic Simulationmentioning

confidence: 99%

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Quasilinear analysis of saturation properties of broadband whistler mode waves

Tao

Chen

Liu

et al. 2017

Geophysical Research Letters

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Saturation properties of parallel propagating broadband whistler mode waves are investigated using quasilinear theory. By assuming that the electron distribution stays bi‐Maxwellian, we combine the previously obtained energy equation of quasilinear theory with wave equation to self‐consistently model the excitation of broadband whistler waves. The resulting evolution profile of wave intensity, spectrum, and electron temperature are consistent with those from particle‐in‐cell (PIC) simulations. We obtain the inverse relation between the saturation temperature anisotropy (A) and parallel plasma beta (β∥) directly from quasilinear theory. Our A‐β∥ relation agrees very well with previous results from observation and PIC simulation. We also demonstrate that it might be possible to predict the wave amplitude from the initial maximum linear growth rate alone and show that the peak frequency and spectrum width are well‐defined functions of the final β∥ at saturation, but not of the initial β∥.

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Section: Comparison Between Quasilinear Analysis and Pic Simulationmentioning

confidence: 99%

Section: Comparison Between Quasilinear Analysis and Pic Simulationmentioning

confidence: 99%

Quasilinear analysis of saturation properties of broadband whistler mode waves

Tao

Chen

Liu

et al. 2017

Geophysical Research Letters

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“…Vocks and Mann show that the resonant wave-particle interaction with whistler waves leads to generation of the suprathermal particles [18]. This is also supported by another particle-in-cell simulation [19].…”

Section: Introductionmentioning

confidence: 57%

An improved method to derive the kappa distribution in polytropic plasmas

Guo

2020

Preprint

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The paper presents an improved method to study the sufficient conditions deriving the kappa distribution in a non-uniform isotropic plasma. We find that the polytropic equation of state can lead to the kappa distribution without any other assumption only in one dimension. In higher dimensions, an extra assumption that the global distribution must only be the function of energy is needed. In addition, the restrictions on the potential are investigated. It is found that the potential cannot be arbitrary in one-component plasma. However, in two-component plasma, any arbitrary potential could exist if we construct the suitable ion density.

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“…[ 42 ] The feature of the electron kappa distribution was investigated in generation of parallel propagating whistler waves by adopting fully particle‐in‐cell simulations. [ 43 ] Ion‐acoustic cnoidal waves were studied in plasmas with kappa distributed electrons and positrons as well as warm ions. [ 44 ] The amplitude modulation of one‐dimensional electron‐acoustic waves was studied in a collisionless plasma consisting of stationary ions, cold electron fluid, and κ distribution hot electrons.…”

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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Formation of electron kappa distributions due to interactions with parallel propagating whistler waves

Cited by 13 publications

References 24 publications

Quasilinear analysis of saturation properties of broadband whistler mode waves

Quasilinear analysis of saturation properties of broadband whistler mode waves

An improved method to derive the kappa distribution in polytropic plasmas

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

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