Kinetic simulation of the O-X conversion process in dense magnetized plasmas

Asgarian, Mohammad Ali; Verboncoeur, John P.; Parvazian, Akbar; Trines, R. M. G. M.

doi:10.1063/1.4826977

Cited by 11 publications

(2 citation statements)

References 35 publications

(62 reference statements)

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“…Ref. [17] also provides an intuitive introduction of different ways for the mode conversion to EBW. Fig.…”

Section: A Ecrfmentioning

confidence: 99%

Plasma Waves Accessibility Diagrams: A Tutorial to Include the Fluid and Kinetic Thermal Effects

Xie¹,

Ma²,

Bai³

2021

Preprint

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Although the accurate description of the wave propagation and absorption in plasmas requires complicated full wave solutions or kinetic simulations, the local dispersion analysis can still be helpful to capture the main physics of wave properties. Plasma wave accessibility informs that whether a wave can propagate to a region, which usually depends on the wave frequency, wave vector, and the local plasma density and magnetic field. In this tutorial paper, we describe the wave accessibility beyond usual textbooks and especially highlight the warm plasma effects. Useful numerical models and methods are provided, which can be used to obtain a quick view of the wave accessibility parameters space. The thermal effects are modeled by both multi-fluid model with isotropic pressure term and kinetic model with Maxwellian velocity distribution function. All cold plasma waves from high frequency electron cyclotron waves, intermediate frequency low hybrid waves to low frequency ion cyclotron waves, as well as kinetic ion and electron Bernstein waves, are presented. The questions that how many plasma wave modes exist and how to find the solutions are also discussed. It is interesting to find that the warm multi-fluid model, though incapable of reproducing the Bernstein modes, can provide a quick way to determine whether the thermal effects are important. To show the kinetic thermal effects, the ray tracing calculations of the mode conversion from cold plasma waves to kinetic waves are also provided, i.e., from the slow X electron cyclotron wave to electron Bernstein wave and from the ion cyclotron fast wave to ion Bernstein wave.

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“…Ref. [17] also provides an intuitive introduction of different ways for the mode conversion to EBW. Fig.…”

Section: A Ecrfmentioning

confidence: 99%

Plasma Waves Accessibility Diagrams: A Tutorial to Include the Fluid and Kinetic Thermal Effects

Xie¹,

Ma²,

Bai³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…These waves are used to heat plasma through electron cyclotron resonance (ECR) heating. As the cyclotron frequency decreases due to the relativistic velocity of the particles so these modes are affected directly [4][5][6]. Astrophysical environments are another region of interest for people to study the relativistic effects as particles with relativistic velocities exist in these naturally existing plasmas.…”

Section: Introductionmentioning

confidence: 99%

Variation in the propagation characteristics of extraordinary mode with density, magnetic field and temperature in a relativistic plasma environment

Ali¹,

Khan²

2022

Phys. Scr.

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Propagation characteristics of extraordinary mode (perpendicularly propagating electromagnetic wave which is partly transverse and partly longitudinal known as X-mode) are examined in a relativistic, weakly relativis- tic and non-relativistic plasma environment for various density to magnetic field ratio ( ωpe/ωce ). The dispersion relation for X-mode is derived by using the relativistic kinetic model and employing Maxwell-Juttner distribution function. The integrals involved in the calculation are evaluated by using numerical quadrature approach. The mass dependent quantities like the cyclotron frequency and the plasma frequency will change by introducing sufficiently high temperature for which η = mc2 kB T < 1. This will effect significantly the propagation characteristics of X-mode. As the relativistic effects increase, the absorption at cyclotron frequency reduces and the dispersion characteristics of plasma vanishes. With the increase in the density or decrease in the magnetic field, the upper hybrid frequency and the right cutoff frequency shifted to a higher value, altering the propagation region.

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Particle-in-cell simulation feasibility test for analysis of non-collective Thomson scattering as a diagnostic method in ITER

Zamenjani

Asgarian

Mostajaboddavati

et al. 2020

Nuclear Engineering and Technology

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Kinetic simulation of the O-X conversion process in dense magnetized plasmas

Cited by 11 publications

References 35 publications

Plasma Waves Accessibility Diagrams: A Tutorial to Include the Fluid and Kinetic Thermal Effects

Plasma Waves Accessibility Diagrams: A Tutorial to Include the Fluid and Kinetic Thermal Effects

Variation in the propagation characteristics of extraordinary mode with density, magnetic field and temperature in a relativistic plasma environment

Particle-in-cell simulation feasibility test for analysis of non-collective Thomson scattering as a diagnostic method in ITER

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