Low-threshold induced side-scattering instability in the edge transport barrier at O-mode ECRH experiments in magnetic fusion devices

2021/06/14 by E. Z. Gusakov, A. Yu. Popov, Gusakov, E. Z. +1
Engineering · Physics and Astronomy · #F.2.2 #FOS: Physical sciences #Magnetic confinement fusion research #Miscellaneous #Particle accelerators and beam dynamics #Physics of Superconductivity and Magnetism #Plasma Physics (physics.plasm-ph)

paper · pdf · doi:10.48550/arxiv.2106.07489

openalex publication_date 2021/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The lower hybrid wave trapping in a tokamak edge transport barrier is predicted. This effect makes possible excitation of the low-power-threshold absolute parametric decay instability leading to side-scattering of the ordinary microwave pump in the electron cyclotron resonance heating experiments. The instability can result in broadening of the power deposition profile both in present day machines and in ITER.

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