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 presents the design of a flexible, university-scale hybrid tokamak-stellarator experiment utilizing an axisymmetric array of planar HTS dipole coils, which enables the generation of a wide range of equilibria—from quasi-axisymmetric stellarators to strongly shaped tokamaks—while maintaining engineering feasibility and reducing the required number of toroidal field coils.
The paper presents the development and experimental validation of the real-time ECH Optimization (ECHO) algorithm on DIII-D, which utilizes a neural network surrogate of the TORBEAM code and a genetic optimizer to robustly control electron cyclotron heating deposition profiles despite gyrotron failures and plasma parameter variations.
This study investigates how elevated background gas pressure affects charge-exchange collisions in a 400 eV argon ion beam plume, revealing that while a semi-empirical model accurately describes fast-ion attenuation, discrepancies in inferred fast-neutral flux highlight the need for complementary diagnostics to distinguish source behavior from facility-induced effects.
The paper introduces VEQ, a fast parametric solver for fixed-boundary tokamak equilibria that utilizes flexible source profiles and harmonic expansions to achieve low-latency, high-accuracy equilibrium reconstruction suitable for repeated queries in transport-geometry coupling workflows.
This paper reports ground-based ICEBEAR radar observations of extreme, transient electric field enhancements in the auroral ionosphere, identified as the ionospheric footprints of magnetotail dipolarization-driven shear Alfvén pulses, thereby elucidating the tight coupling between magnetospheric substorms and meter-scale plasma turbulence.
This paper reports the discovery and theoretical characterization of a previously unrecognized electrostatic hose instability in electron-beam-sustained plasmas, which arises from the coupling between the electron beam centroid and ionization-generated plasma and is confirmed by particle-in-cell simulations.
This paper proposes a mixed Hermite-Legendre spectral method for kinetic plasma simulations that combines the efficiency of Hermite polynomials for near-Maxwellian distributions with the resolution capabilities of Legendre polynomials for localized non-Maxwellian features, achieving improved accuracy and conservation of physical invariants at a comparable computational cost.
This paper utilizes fully kinetic particle-in-cell simulations and linear theory to demonstrate that parallel-propagating electromagnetic ion cyclotron (EMIC) waves can drive secondary lower-hybrid instabilities in multi-component plasmas, leading to anisotropic heating of cold ions and electrons even at low wave amplitudes.
This paper introduces Vidyut3d, a performance-portable, GPU-accelerated non-equilibrium plasma fluid solver built on the AMReX library that achieves 150–400x speed-ups on multi-architecture CPU+GPU systems while maintaining second-order accuracy through adaptive grids and advanced numerical schemes.
This paper systematically compares VMEC and HINT equilibrium calculations for Large Helical Device plasmas, revealing that while both codes agree at low beta, they diverge at higher beta values as HINT captures edge stochasticity and flux surface breaking that the nested-flux-surface assumption of VMEC cannot represent.