616 papers
Plasma physics explores the behavior of the fourth state of matter, a superheated soup of charged particles that makes up most of the visible universe. From the fusion power we hope to harness on Earth to the glowing auroras and distant stars above, this field investigates how these energetic gases interact with magnetic fields and light. It is a dynamic area where extreme conditions reveal fundamental laws of nature in ways solid matter never can.
At Gist.Science, we bridge the gap between these complex discoveries and curious minds by processing every new preprint from arXiv in this category. We transform dense, technical research into clear, plain-language explanations alongside detailed summaries, ensuring that breakthroughs in plasma dynamics and fusion energy are accessible to everyone. Below are the latest papers in plasma physics, curated and simplified for your reading.
Using high-resolution numerical simulations, this paper resolves the long-standing debate on isotropic MHD turbulence scaling by demonstrating that total energy and cross helicity spectra robustly follow Kolmogorov's law, while the kinetic energy spectrum exhibits a scaling due to energy transfers from the magnetic field.
Through high-resolution three-dimensional simulations, this study demonstrates that unstable magnetic reconnection in magnetised jets can self-sustainfully transition into fully developed turbulence via a current-sheet instability, where the coupling between turbulent electromotive force and magnetic mean shear drives persistent energy injection and subsequent nonlinear cascades.
This paper presents high-fidelity collisional-radiative data for hydrogen, helium, neon, and argon plasma species generated using ATOMIC and FCR codes, which are represented as efficient B-spline surfaces to support accurate tokamak disruption mitigation modeling and runaway electron minimization.
This paper extends out-of-time-ordered correlators (OTOCs) to turbulent fields by deriving a semiclassical limit for the Hasegawa-Mima equation that quantifies information scrambling via Lie-Poisson brackets, revealing that strong zonal flows induce an algebraic suppression of non-zonal perturbations through rapid shearing.
This paper investigates how screening and pressure ionization effects in dense plasmas, modeled via an average-atom approach, alter electron-collision cross sections and the resulting line broadening of the B III transition, revealing that while screening generally reduces line widths, pressure ionization induces sharp increases through resonances in the continuum.
This paper derives nonlinear equations describing the dynamics of hybrid whistler-Alfvén modes in ultrarelativistic non-neutral pair plasmas and discusses the resulting turbulence spectrum, which notably reverses the typical scale-dependent mode transformation observed in conventional plasmas.
This study demonstrates through experiments and simulations that realistic, non-ideal transverse laser intensity and phase distributions significantly alter injection dynamics in laser wakefield acceleration, resulting in lower electron charge and energy compared to idealized Gaussian models, thereby providing critical insights for optimizing high-charge beam production.
This study utilizes an enhanced 1D simulation framework to demonstrate that while staggered or low-neon shattered pellet injections can effectively mitigate runaway electron generation in ITER L-mode scenarios, avoiding multi-megaampere beams in DT H-mode disruptions requires specific conditions like long pre-thermal quench durations and high deuterium assimilation to counteract nuclear seed effects.
This paper introduces a generalized characteristic mapping method that utilizes a semi-Lagrangian approach with Duhamel integrals to efficiently solve non-linear advection with source terms, demonstrating third-order accuracy and exceptional resolution in ideal magnetohydrodynamics simulations.
This study utilizes global GTC simulations to demonstrate that zonal flows effectively suppress ion temperature gradient-driven turbulence in both the Wendelstein 7-X and QSTK stellarator configurations, with the latter exhibiting lower heat flux due to higher critical gradients and similar mode structures.