627 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 provides a mathematically rigorous derivation of the first-order expansion for charged particle motion in strong magnetic fields, demonstrating that standard physical assumptions—such as a small gyroradius—are actually consequences of the field strength rather than necessary prerequisites, thereby justifying the use of the guiding center approximation even in complex scenarios like magnetic mirrors.
The paper argues that because space plasmas are practically collisionless, the anisotropic compression or expansion they undergo leads to inevitable non-equilibrium states—such as anisotropic, non-thermal, or multi-temperature momentum distributions—as they relax without the ability to return to thermal equilibrium through collisions.
This paper develops and validates a series of analytic models to describe how recycled neutral atoms penetrate plasma and contribute to fueling, demonstrating that charge exchange can be simplified as a loss term to create a practical closed-form solution.
This paper reports the first experimental observation that continuous lithium granule dropping in a high-density stellarator plasma enhances the transport of mid- and high-Z impurities, with simulations suggesting that classical transport is the primary mechanism driving this effect for molybdenum.
This paper utilizes a matrix hydrodynamics approach to develop structure-preserving discretizations for three 2D magnetohydrodynamics models, demonstrating through long-time simulations that while all models exhibit an inverse cascade of magnetic energy, they differ significantly in their vorticity dynamics and kinetic energy cascades.
This paper proposes an improved evaluation approach for the Pulsed Townsend experiment that accounts for cathode boundaries and initial electron swarm width, resulting in more accurate determination of electron transport properties, including the longitudinal diffusion coefficient.
This paper describes an experiment in the Magnetized Dusty Plasma eXperiment (MDPX) where increasing a magnetic field causes micron-sized dust particles to transition from a naturally hexagonal "self-ordered" crystal structure to a "4-fold imposed ordering" that follows the geometry of an overhead conducting mesh.
This paper introduces FPIC, a new parallelized Particle-In-Cell code using spherical Kerr-Schild coordinates and a novel hybrid integration scheme to simulate plasma dynamics and electromagnetic processes around stationary and axisymmetric black holes.
This paper investigates the combined optical effects of a Schwarzschild black hole and a Dehnen-type dark matter halo, analyzing light deflection, shadow formation, and gravitational lensing in both vacuum and plasma environments.
This paper develops a computationally efficient reduced multi-fluid model to capture rotation-induced centrifugal separation and electrostatic polarization in proton-boron spherical tokamaks, demonstrating that these effects significantly alter plasma equilibrium and must be accounted for in reactor design.