534 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.
This paper demonstrates through theoretical and particle-in-cell modeling that transverse ballistic cooling in expanding laser-irradiated plasma plumes drives Weibel-mediated electron current filaments, successfully explaining magnetic fluctuation data from OMEGA and Laser Megajoule experiments.
This paper presents and compares three distributed parallelization strategies—domain decomposition, particle decomposition, and space-time decomposition using the parareal algorithm—for particle-in-Fourier schemes in kinetic plasma simulations, analyzing their communication patterns, performance regimes, and scaling on supercomputers via the IPPL library.
This paper demonstrates that coupling a slow elastic string to a bath of run-and-tumble particles induces a frenetic contribution to friction that can become negative at intermediate propulsion speeds, leading to wave instabilities analogous to inverse Landau damping before vanishing at very high speeds.
This study analyzes IRIS spectroscopic data of the October 3, 2024, X9.0 solar flare to reveal pre-flare signatures, including specific periodic oscillations and a three-hour gradual rise in line parameters, which collectively suggest a slow magnetic destabilization followed by rapid reconnection leading to the eruption.
Through 3D Particle-in-Cell simulations of relativistic pair plasma turbulence, this study demonstrates that mirror acceleration acts as an efficient Type-II mechanism, wherein particles gain significant energy by interacting with amplifying transverse magnetic fields, leading to strongly anisotropic pitch-angle distributions that further enhance particle confinement and acceleration.
This work analyzes experimental data from a 2022 petawatt laser facility to derive an effective single-shot temperature and a non-equilibrium "TNSA equation of state" for quasineutral plasmas and demonstrates that deviations from the ideal gas limit are well described by Korteweg-de Vries soliton solutions.
This paper details the comprehensive electrical redesign and modernization of the Diagnostic Neutral Beam Injector for the RFX-mod2 experiment, focusing on a restructured High Voltage Deck, simplified power transfer, enhanced safety against breakdowns, custom multipurpose power supplies, and an improved PLC control system to ensure reliable and maintainable operation.
This paper proposes an Expectation-Maximization (EM) algorithm for estimating kappa distribution parameters by treating inverse temperature as a latent gamma-distributed variable within a superstatistical framework, thereby overcoming the lack of exponential family structure to enable analytically tractable maximum likelihood inference.
Using dual-axis proton radiography on OMEGA EP, researchers determined that the growth of anomalous electromagnetic fields in laser ablation is driven by a secondary instability resulting from the expansion-driven Weibel instability, with the field structure primarily dependent on laser energy and target atomic number.
Using PIC simulations, this study reveals that electrically charged current layers in astrophysical plasmas exhibit an intricate interplay between electrostatic Bernstein waves and the tearing instability, where charge redistribution modifies the initial tearing stage and can significantly enhance plasmoid growth rates depending on the layer configuration and plasma temperature.