725 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 introduces and validates a novel linear charge-flow (C-flow) instability in magnetized plasmas, driven by electric currents proportional to charge chemical potential and bulk velocity, which persists under conditions of zero-mean fluctuations, vanishing resistivity, and unit magnetic Prandtl number.
This paper presents a systematic derivation of relativistic chiral magnetohydrodynamics equations for an expanding universe that, through specific rescaling, reduce to their Minkowski form while revealing new current-conservation-mandated terms and providing the necessary coefficients to evaluate magnetic field generation and dynamo operation in the early Universe's radiation-dominated era.
This paper reports a new experimental platform at the DIII-D tokamak that utilizes high-heat-flux carbon ablation tests to validate aerospace heat shield models and study material response under conditions simulating both fusion divertor environments and high-enthalpy atmospheric entry.
This paper presents a new theoretical framework and validated simulation approach using the quasistatic approximation to overcome spatiotemporal scale disparities, enabling the study of ultrarelativistic streaming plasma instabilities in extremely dilute beams like blazar jets and revealing the dominance of current filamentation near the beam front.
This paper presents a unified, fully electromagnetic quasi-static model that resolves the spatiotemporal competition between oblique two-stream and current filamentation instabilities in relativistic beam-plasma systems, revealing a previously unreported CFI dominance near the beam front and validating the approach against particle-in-cell simulations.
This study employs a first-principles reduced kinetic method to demonstrate that ion-electron collisions significantly alter peak nonlocal ion heat flow and suppress preheating in strongly inhomogeneous plasmas by affecting suprathermal particles in the distribution tail.
This paper resolves the unsolved problem of predicting maximum current in diodes with small emission areas and low emission energies by introducing a new model that combines differential equations, integral equations, and particle-in-cell simulations to derive new scaling laws corroborated by experimental data.
This paper presents the implementation and verification of an energy- and momentum-conserving knock-on collision operator within a 3D full-f particle-in-cell model in the JOREK code, enabling high-fidelity simulations of runaway electron avalanche dynamics in realistic tokamak disruption scenarios.
Iharm3D is an open-source C code that implements the HARM algorithm to perform vectorized, conservative finite-volume simulations of ideal general-relativistic magnetohydrodynamics for black hole accretion systems in arbitrary stationary spacetimes.
This paper demonstrates how the traveling-wave solution of the nonlinear Schrödinger equation maps onto the curvature equation of a closed 3D elastica knot, revealing that the constraint of spatial periodicity necessitates an extension of the classical elastica-knot parameter space to accommodate specific knot parameters derived from the wave's velocity and circulation.