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 a unified theoretical framework describing how ions gain perpendicular energy through magnetic moment breaking caused by localized electromagnetic fluctuations, offering a generic model for stochastic heating that applies to both Alfvénic turbulence and magnetic reconnection.
This paper derives relativistic resistive magnetohydrodynamics for a two-component ultrarelativistic plasma directly from kinetic theory using the 14-moment approximation, establishing a simplified model that accurately describes systems with small viscosity-to-entropy ratios and weak fields while revealing controlled deviations, such as nonlinear back-reaction and shear-stress generation, in regimes with strong electric fields or significant shear stress.
Through simplified 3D MHD simulations and phenomenological analysis, this study identifies an asymptotic ultimate regime for the solar dynamo at large magnetic Reynolds numbers characterized by inter-hemispheric helicity fluxes, while highlighting that current global simulations remain trapped in non-asymptotic, parameter-sensitive regimes and outlining strategies to reach the true asymptotic state in realistic models.
This paper proposes entropy-stable numerical schemes for the generalized Lagrange multiplier (GLM) reformulation of the Chew, Goldberger & Low (CGL) plasma flow equations, demonstrating through numerical results that this approach significantly improves the control of magnetic field divergence compared to the standard CGL model.
This paper presents a first-principles Particle-in-Cell simulation framework for Thomson scattering in inertial confinement fusion that validates existing theories for thermal regimes and reveals a beating wave mechanism allowing significant signals even under imperfect wave-vector matching, thereby offering a practical tool for interpreting complex driven ion mode diagnostics.
Using hybrid expanding box simulations initialized with Helios spacecraft data, this study demonstrates that the long-term evolution of proton beams in the solar wind is driven by the interplay of nonlinear Alfvén waves, expansion effects, and kinetic instabilities, successfully reproducing observed radial trends out to 1.5 AU.
During Parker Solar Probe's 24th encounter, the spacecraft flew near the base of a pseudo-streamer and detected a record-breaking 400 mV/m electric field in the plasma rest frame, which was balanced by Generalized Ohm's Law terms rather than an E×B drift within a confined, turbulent region of enhanced plasma density and reduced solar wind velocity.
This paper presents the first detailed MeerKAT imaging spectroscopy of a solar flare, demonstrating unprecedented dynamic range and spatial resolution that reveal distinct coherent and incoherent emission sources linked to specific magnetic structures and electron populations, thereby establishing MeerKAT as a powerful diagnostic tool for future solar studies with SKA-Mid.
This paper presents a comprehensive tutorial on inversion-based shape control (IBSC) for tokamaks, detailing design variations and a systematic procedure that, when applied to NSTX-U, successfully eliminates vertical control oscillations and improves phase margin by decoupling shape and vertical control interactions.
Using high-resolution multiwavelength observations from the Solar Dynamics Observatory, this study traces the evolution of a coronal plasma sheet to demonstrate that plasmoid formation and ejection act as key carriers of magnetic flux that significantly enhance the reconnection rate and facilitate fast magnetic reconnection.