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 resolves the inherent ambiguity in shock solutions for multi-temperature Euler equations of compressible plasma flows by deriving two distinct, physically admissible Hugoniot relations and demonstrating that microscopic physics, rather than macroscopic PDEs alone, is essential for uniquely determining shock structures.
This study compares fluid and hybrid models to demonstrate that the Hall term governs the evolution of kinked Alfvén wave packets in low- plasmas, where dispersion converts wave energy into internal energy through both plasma compression and phase space mixing driven by proton resonance.
This study demonstrates that angle-resolved X-ray Thomson scattering measurements of shock-compressed aluminium reveal significant inaccuracies in standard uniform-electron-gas models, establishing that ab initio treatments accounting for shock-induced disorder are essential for reliable diagnostics of warm dense matter.
This article proposes a self-consistent quasilinear theory showing that non-thermal power-law distributions and the temperature inversion of the solar corona are interrelated phenomena arising from electromagnetically driven particle acceleration and Debye shielding, which naturally produce universal high-energy tails in kinetic multi-component plasmas as well as heating driven by velocity filtering.
This paper presents a synthetic model of gamma-ray emission for the SPARC tokamak's reference discharge, utilizing realistic plasma profiles and high-fidelity radiation transport simulations to evaluate detector performance, optimize spectrometer placement, and assess the feasibility of reconstructing fusion power via gamma spectroscopy amidst high neutron yields.
This paper investigates how finite-amplitude effects and the non-uniform fast magnetoacoustic speed near a coronal magnetic null point cause an incoming wave to steepen and dissipate nonlinearly before reaching the null, offering insights into the sympathetic flare phenomenon.
This study utilizes global trans-collisional fluid simulations with GRILLIX to demonstrate that Pedestal Relaxation Events (PREs) in ASDEX Upgrade I-mode discharges are triggered by Micro-Tearing Modes (MTMs), successfully reproducing experimental characteristics and validating a qualitative cycle model through agreement with linear growth-rate theory.
This paper presents a unified, thermodynamically consistent analytic closure that corrects conventional harmonic models' mispredictions of superelastic electron heating in non-equilibrium Treanor-Gordiets plasmas by introducing an anharmonic correction factor to accurately capture the kinetic competition between vibrational up-pumping and relaxation.
This paper presents 2D JOREK simulations of the ASDEX Upgrade tokamak demonstrating the formation, stationary control, and vertical movement of the X-point radiator regime in response to nitrogen seeding rate adjustments, thereby validating the code's capability to model time-varying XPR dynamics as a precursor to future 3D studies.
This study investigates the performance of hydrogen-fueled open-cycle magnetohydrodynamic generators under supersonic conditions, revealing that exceptional power densities exceeding 1000 MW/m³ can be achieved by operating at low pressures (around 0.1 atm) with cesium seeding.