Semantic Information Management in Low-Temperature Plasma Science and Technology with VIVODigital research data management is increasingly integrated across universities and research institutions, addressing the handling of research data throughout its lifecycle according to the FAIR data…Ihda Chaerony Siffa, Robert Wagner, Markus M. Becker·Sep 17, 2024SaveLearn
Limitations from charge quantization on the parallel temperature diagnostic of nonneutral plasmasWe develop a new algorithm to estimate the temperature of a nonneutral plasma in a Penning-Malmberg trap. The algorithm analyzes data obtained by slowly lowering a voltage that confines one end of…Adrianne Zhong, Joel Fajans, Jonathan S. Wurtele·Sep 17, 2024SaveLearn
Wave Steepening and Shock Formation in Ultracold Neutral PlasmasWe present observations of wave steepening and signatures of shock formation during expansion of ultracold neutral plasmas formed with an initial density distribution that is centrally peaked and…M. K. Warrens, N. P. Inman, G. M. Gorman et al.·Sep 17, 2024SaveLearn
An Extended Variational Method for the Resistive Wall Mode in Toroidal Plasma Confinement DevicesThe external-kink stability of a toroidal plasma surrounded by a rigid resistive wall is investigated. The well-known analysis of Haney & Freidberg is rigorously extended to allow for a wall that is…R. Fitzpatrick·Sep 17, 2024SaveLearn
General relaxation model for a homogeneous plasma with spherically symmetric velocity spaceA kinetic moment-closed model (KMCM), derived from the Vlasov-Fokker-Planck (VFP) equation with spherically symmetric velocity space, is introduced as a general relaxation model for homogeneous…Yanpeng Wang, Shichao Wu, Peifeng Fan·Sep 16, 2024SaveLearn
Universal cascade and relaxation of strong anisotropic turbulence in fusion plasmasStarting from the governing equations, exact relations have been derived for three-dimensional reduced magnetohydrodynamic turbulence corresponding to the inertial range cascade of energy and…Ramesh Sasmal, Supratik Banerjee·Sep 15, 2024SaveLearn
High-Fidelity Data-Driven Dynamics Model for Reinforcement Learning-based Control in HL-3 TokamakThe success of reinforcement learning (RL)-based control in tokamaks, an emerging technique for controlled nuclear fusion with improved flexibility, typically requires substantial interaction with a…Niannian Wu, Zongyu Yang, Rongpeng Li et al.·Sep 14, 2024SaveLearn
Model-free Rayleigh weight from x-ray Thomson scattering measurementsX-ray Thomson scattering (XRTS) has emerged as a powerful tool for the diagnostics of matter under extreme conditions. In principle, it gives one access to important system parameters such as the…Tobias Dornheim, Hannah M. Bellenbaum, Mandy Bethkenhagen et al.·Sep 13, 2024SaveLearn
Dephasing of ion beams as Magnetic Vortex Acceleration regime transitions into a bubble-like field structureThe interaction of an ultra-intense laser pulse with a near critical density target results in the formation of a plasma channel, a strong azimuthal magnetic field and moving vortices. An application…Sahel Hakimi, Stepan S. Bulanov, Axel Huebl et al.·Sep 13, 2024SaveLearn
Production and magnetic self-confinement of e-e+ plasma by an extremely intense laser pulse incident on a structured solid targetWe propose an all-optical, single-laser-pulse scheme for generating dense, relativistic, strongly-magnetized electron-positron pair plasma. The scheme involves the interaction of an extremely intense…Alexander Samsonov, Alexander Pukhov·Sep 13, 2024SaveLearn
FreeMHD: validation and verification of the open-source, multi-domain, multi-phase solver for electrically conductive flowsThe extreme heat fluxes in the divertor region of tokamaks may require an alternative to solid plasma-facing components, for the extraction of heat and the protection of the surrounding walls.…Brian Wynne, Francisco Saenz, Jabir Al-Salami et al.·Sep 13, 2024SaveLearn
Probing the radiation-dominated regime of laser-plasma interaction in multi-beam configurations of petawatt lasersWe model numerically the ultrarelativistic dynamics of a dense plasma microtarget in a focus of several intersecting femtosecond laser pulses of multi-petawatt power each. The aim is to examine…T. Liseykina, E. Peganov, S. Popruzhenko·Sep 12, 2024SaveLearn
Design Optimization of Nuclear Fusion Reactor through Deep Reinforcement LearningThis research explores the application of Deep Reinforcement Learning (DRL) to optimize the design of a nuclear fusion reactor. DRL can efficiently address the challenging issues attributed to…Jinsu Kim, Jaemin Seo·Sep 12, 2024SaveLearn
E× B shear suppression of microtearing based transport in spherical tokamaksElectromagnetic microtearing modes (MTMs) have been observed in many different spherical tokamak regimes. Understanding how these and other electromagnetic modes nonlinearly saturate is likely…B. S. Patel, M. R. Hardman, D. Kennedy et al.·Sep 12, 2024SaveLearn
Two-plasmon decay instability and 3/2 harmonic generation in inhomogeneous magnetized plasmaTwo-plasmon decay instability emerges as the parametric decay of laser beams into two plasma waves which is expected for hohlraum in inertial confinement fusion. The behavior of this instability in…S. S. Ghaffari-Oskooei, A. A. Molavi Choobini·Sep 12, 2024SaveLearn
On turbulent magnetic reconnection: fast and slow mean steady-statesWe investigate a model of turbulent magnetic reconnection introduced by Higashimori, Yokoi and Hoshino (Phys. Rev. Lett. 110, 255001) and show that the classic two-dimensional, steady-state…Sage Stanish, David MacTaggart·Sep 11, 2024SaveLearn
Universal Diffusion in Coulomb CrystalsDiffusion coefficients for crystallized Coulomb plasmas are essential microphysics input for modeling white dwarf cores and neutron star crusts but are poorly understood. In this work we present a…M. E. Caplan, D. Yaacoub·Sep 11, 2024SaveLearn
Numerical Investigations on Dilute Cold Plasma Potential and Electron TemperatureSimulation results are presented to demonstrate electron temperature and electrical potential development in dilute and cold plasma development. The simulation method is a hybrid method which adopted…Shiying Cai, Chunpei Cai, Zhen Zhang·Sep 10, 2024SaveLearn
Theoretical Study of Inhomogeneity Effects on Three-Wave Parametric Instability: A WKBJ ApproachThe mechanisms by which media inhomogeneity affects the three wave parametric instability (PI), including the wave number mismatch and the parameter gradients, are investigated using an approach…Taotao Zhou, Nong Xiang, Chunyun Gan et al.·Sep 10, 2024SaveLearn
Enhancement of fusion reactivities using non-Maxwellian energy distributionsWe discuss conditions for the enhancement of fusion reactivities arising from different choices of energy distribution functions for the reactants. The key element for potential gains in fusion…Ben I. Squarer, Carlo Presilla, Roberto Onofrio·Sep 9, 2024SaveLearn
Faraday shield dissipation in the drivers of SPIDER based on electromagnetic 3D calculationsSPIDER (Source for the Production of Ions of Deuterium Extracted from Rf plasma) is a full-scale prototype of the ITER NBI source. It is based on the concept of inductive coupling between…D. López-Bruna, S. Denizeau, I. Predebon et al.·Sep 9, 2024SaveLearn
Integrating Novel Stellarator Single-Stage Optimization Algorithms to Design the Columbia Stellarator ExperimentThe Columbia Stellarator eXperiment (CSX), currently being designed at Columbia University, aims to test theoretical predictions related to QA plasma behavior, and to pioneer the construction of an…A. Baillod, E. J. Paul, G. Rawlinson et al.·Sep 9, 2024SaveLearn
Wideband Glide-Symmetric Double-Corrugated Gap-Waveguide Traveling-Wave Tube for Millimeter WavesWe explore the use of glide symmetry (GS) and electromagnetic bandgap (EBG) technology in a glide-symmetric double corrugated gap waveguide (GSDC-GW) slow wave structure (SWS) for traveling wave tube…Miguel Saavedra-Melo, Nelson Castro, Robert Marosi et al.·Sep 8, 2024SaveLearn
Pump depletion and the Raman gap in ignition-scale plasmasLaser-plasma instabilities under ignition conditions for direct-drive inertial confinement fusion are studied using two-dimensional Particle-in-Cell simulations with a combination of in-plane (PP)…S. H. Cao, M. J. Rosenberg, A. A. Solodov et al.·Sep 8, 2024SaveLearn
Machine Learning for Chemistry Reduction in N2-H2 Low-Temperature PlasmasLow-temperature plasmas are partially ionized gases, where ions and neutrals coexist in a highly reactive environment. This creates a rich chemistry, which is often difficult to understand in its…Diogo R. Ferreira, Alexandre Lança, Luís Lemos Alves·Sep 7, 2024SaveLearn