612 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 demonstrates through simulations that utilizing quasi-neutral electron-positron pair beams in free-electron lasers cancels detrimental space-charge fields, thereby enabling full-bunch, high-gain lasing that produces beyond-terawatt attosecond pulses and opens a pathway to coherent gamma-ray emission.
This paper presents a new theoretical model demonstrating that cross-talk effects between coupled high-power laser beams, particularly when enhanced by an external magnetic field, can destabilize and reduce both Stimulated Brillouin and Raman scattering in underdense plasmas, offering promising benefits for magnetized inertial confinement fusion.
This paper presents a generalized density functional theory framework that links free-energy functional derivatives to non-linear static density response functions, deriving explicit expressions for higher-order responses (including the first theoretical cubic response) and validating them against Kohn-Sham simulations to provide exact constraints for improving approximations in warm dense matter applications.
This paper introduces QI-pwO magnetic fields that combine quasi-isodynamic properties in low-field regions with significant deviations in high-field regions to maintain optimal neoclassical transport while simplifying stellarator shaping and coil geometry.
This paper presents similarity experiments on the DIII-D and TCV tokamaks demonstrating that negative triangularity plasmas exhibit weak confinement improvement with increasing collisionality and a machine size scaling behavior intermediate between Bohm and gyro-Bohm, which aligns with engineering scaling observations.
This brief review discusses the historical development of generalizing the Grad-Shafranov equation to describe anisotropic plasmas, with a specific focus on the contributions of Mercier and Cotsaftis.
This paper presents a comprehensive cold-fluid analysis of the Weibel instability across non-relativistic and relativistic, single- and multi-species regimes, deriving scaling laws that accurately predict filament spacing and magnetic field saturation in both laboratory laser experiments and MMS spacecraft observations of astrophysical shocks.
This study utilizes the RAPTOR code to demonstrate that the timescale for controlled termination of Ohmic tokamak plasmas scales with the inductive time constant , revealing that while ramping down faster than this limit induces adverse current profile reversals, the reduced plasma volume and elongation in reactor-grade devices like ITER and DEMO may enable faster, stable termination scenarios.
This paper reports the first experimental measurement of gamma-ray polarization in strong-field nonlinear Compton scattering, demonstrating a ~50% linear polarization degree that aligns with quantum interference predictions of strong-field QED and validates the locally monochromatic approximation over the locally constant field approximation.
This paper presents the first comprehensive full-f drift-kinetic and -f gyrokinetic simulations of the LAPD linear plasma device, revealing that ion distributions are approximately bi-Maxwellian and that Kelvin-Helmholtz-driven turbulence dominates the system, with small-scale structures only significantly amplified under reduced collisionality and enhanced source conditions.