Hybrid simulation of Alfvén wave parametric decay instability in a laboratory relevant plasma
arXiv:2205.04649 · doi:10.1063/5.0100144
Abstract
Large-amplitude Alfvén waves are subject to parametric decays which can have important consequences in space, astrophysical, and fusion plasmas. Though the Alfvén wave parametric decay instability was predicted decades ago, observational evidence is limited, stimulating considerable interest in laboratory demonstration of the instability and associated numerical modeling. Here, we report novel hybrid simulation of the Alfvén wave parametric decay instability in a laboratory relevant plasma (based on the Large Plasma Device), using realistic wave injection and wave-plasma parameters. Considering only collisionless damping, we identify the threshold Alfvén wave amplitudes and frequencies required for triggering the instability in the bounded plasma. These threshold behaviors are corroborated by simple theoretical considerations. Other effects not included in the present model such as finite transverse scale and ion-neutral collision are briefly discussed. These hybrid simulations demonstrate a promising tool for investigating laboratory Alfvén wave dynamics that can provide guidance for future laboratory demonstration of the parametric decay instability.
arXiv comment8 pages, 3 figures
References in corpus (15)
- Heating of the Solar Chromosphere and Corona by Alfven Wave Turbulence
- Magnetic field kinks and folds in the solar wind
- Connecting the Sun and the Solar Wind: The Self-consistent Transition of Heating Mechanisms
- Toward Astrophysical Turbulence in the Laboratory
- Frequency-dependent Alfvén-wave propagation in the solar wind: Onset and suppression of parametric decay instability
- Parametric decay and the origin of the low frequency Alfvénic spectrum of the solar wind
- Observation of an Alfvén Wave Parametric Instability in a Laboratory Plasma
- Density Fluctuations in the Solar Wind Driven by Alfvén Wave Parametric Decay
- The Parametric Decay Instability of Alfven waves in Turbulent Plasmas and the Applications in the Solar Wind
- Nonlinear excitation of acoustic modes by large amplitude Alfvén waves in a laboratory plasma
- Parametric Decay Instability and Dissipation of Low-frequency Alfvén Waves in Low-beta Turbulent Plasmas
- Parametric instabilities of large-amplitude parallel propagating Alfven waves: 2-D PIC simulation
- The role of parametric instabilities in turbulence generation and proton heating: Hybrid simulations of parallel propagating Alfvén waves
- Control of gradient-driven instabilities using shear Alfvén beat waves
- Heating of Heavy Ions in Low-beta Compressible Turbulence