Quasioptical modeling of wave beams with and without mode conversion. III. Numerical simulations of mode-converting beams

@article{Yanagihara2019QuasiopticalMO,
  title={Quasioptical modeling of wave beams with and without mode conversion. III. Numerical simulations of mode-converting beams},
  author={K. Yanagihara and I. Y. Dodin and Shin Kubo},
  journal={Physics of Plasmas},
  year={2019}
}
This work continues a series of papers where we propose an algorithm for quasioptical modeling of electromagnetic beams with and without mode conversion. The general theory was reported in the first paper of this series, where a parabolic partial differential equation was derived for the field envelope that may contain one or multiple modes with close group velocities. In the second paper, we presented a corresponding code PARADE (PAraxial RAy DEscription) and its test applications to single… 

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References

SHOWING 1-10 OF 26 REFERENCES

Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams

This work continues a series of papers where we propose an algorithm for quasioptical modeling of electromagnetic beams with and without mode conversion. The general theory was reported in the first

Quasioptical modeling of wave beams with and without mode conversion. I. Basic theory

This work opens a series of papers where we develop a general quasioptical theory for mode-converting electromagnetic beams in plasma and implement it in a numerical algorithm. Here, the basic theory

Quasi-optical description of wave beams in smoothly inhomogeneous anisotropic media

The quasi-optical description of wave beams is extended to smoothly inhomogeneous anisotropic and/or gyrotropic media. A method of deriving quasi-optical equations for a slow-varied scalar beam

Beam tracing in inhomogeneous anisotropic plasmas

An asymptotic method for solving the wave equation in the short-wavelength limit is presented. This method, called beam tracing, takes into account the wave properties, i.e., diffraction and

EC Beam Tracing in Fusion Plasmas

Extensions of the Ray Equations of Geometric Optics to Include Diffraction Effects

The paper discusses an extension of the ray equations of geometric optics to include diffraction effects for a wave beam propagating in a dispersive anisotropic medium. The diffraction effects are

Quasioptical treatment of electromagnetic Gaussian beams in inhomogeneous and anisotropic plasmas

The main effect of the Gaussian behavior of an electromagnetic beam consists in a waist formation in focal regions, where the ordinary geometric optics would collapse. The characteristic features of

A Quasi-Optical Beam-Tracing Code for Electron Cyclotron Absorption and Current Drive: GRAY

The theoretical framework of quasi-optical propagation power absorption and driven current of a Gaussian beam of electron cyclotron (EC) waves in a general tokamak equilibrium implemented in the code

ECRH power deposition from a quasi-optical point of view

A quasi-optical description of the propagation and damping of the slowly varying wave amplitude across an arbitrary electron cyclotron wave beam is presented. This model goes well beyond those