Accelerating Particle-in-Cell Kinetic Plasma Simulations via Reduced-Order Modeling of Space-Charge Dynamics using Dynamic Mode DecompositionWe present a data-driven reduced-order modeling of the space-charge dynamics for electromagnetic particle-in-cell (EMPIC) plasma simulations based on dynamic mode decomposition (DMD). The dynamics of…Indranil Nayak, Fernando L. Teixeira, Dong-Yeop Na et al.·Mar 28, 2023SaveLearn
The Role of Free Electrons in Ball Lightning CreationAfter more than 180 years of research, ball lightning is still an unsolved problem in atmospheric physics. Since no progress can be expected without a controlled production of such objects in a…Herbert Boerner·Mar 28, 2023SaveLearn
Effects of collisional ion orbit loss on tokamak radial electric field and toroidal rotation in an L-mode plasmaIon orbit loss has been used to model the formation of a strong negative radial electric field Er in the tokamak edge, as well as edge momentum transport and toroidal rotation. To quantitatively…Hongxuan Zhu, T. Stoltzfus-Dueck, R. Hager et al.·Mar 28, 2023SaveLearn
A framework for experimental-data-driven assessment of Magnetized Liner Inertial Fusion stagnation image metricsA variety of spherical crystal x-ray imager (SCXI) diagnostics have been developed and fielded on Magnetized Liner Inertial Fusion (MagLIF) experiments at the Sandia National Laboratories Z-facility.…William E. Lewis, Eric C. Harding, David A. Yager-Elorriaga et al.·Mar 28, 2023SaveLearn
Controlling the Density of Plasma Species in Ar/CF4 Radiofrequency Capacitively Coupled Plasma DischargesIn this manuscript, a fluid model is utilized to calculate the density of plasma species assuming geometrically symmetric Ar/CF4 Radiofrequency Capacitively Coupled Plasmas. The electrodes are driven…M. G. Elsheikh, Y. Abdella, T. El-Ashram et al.·Mar 27, 2023SaveLearn
Nonlocal dynamics of secondary electrons in capacitively coupled radio frequency dischargesIn capacitively coupled radio frequency (CCRF) discharges, the interaction of the plasma and the surface boundaries is linked to a variety of highly relevant phenomena for technological processes.…Katharina Noesges, Maximilian Klich, Aranka Derzsi et al.·Mar 27, 2023SaveLearn
Disruption Precursor Onset Time Study Based on Semi-supervised Anomaly DetectionThe full understanding of plasma disruption in tokamaks is currently lacking, and data-driven methods are extensively used for disruption prediction. However, most existing data-driven disruption…Xinkun Ai, Wei Zheng, Ming Zhang et al.·Mar 27, 2023SaveLearn
Scale invariance and critical balance in electrostatic drift-kinetic turbulenceThe equations of electrostatic drift kinetics are observed to possess a symmetry associated with their intrinsic scale invariance. Under the assumptions of spatial periodicity, stationarity, and…T. Adkins, P. G. Ivanov, A. A. Schekochihin·Mar 26, 2023SaveLearn
Particle charging during pulsed EUV exposures with afterglow effectThe nanoparticle charging processes along with background spatial-temporal plasma profile have been investigated with 3DPIC simulation in a pulsed EUV exposure environment. It is found that the…M. Chaudhuri, L. C. J. Heijmans, M. van de Kerkhof et al.·Mar 26, 2023SaveLearn
Dynamics of rapidly spinning blob-filaments: fluid theory with a parallel kinetic extensionBlob-filaments (or simply 'blobs') are coherent structures formed by turbulence and sustained by nonlinear processes in the edge and scrape-off layer (SOL) of tokamaks and other magnetically…J. R. Myra, J. Cheng, S. E. Parker·Mar 24, 2023SaveLearn
Role of FLR effects in magnetopause equilibriumThe Earth magnetopause, when sufficiently plane and stationary at a local scale, can be considered as a "quasi-tangential" discontinuity, since the normal component of the magnetic field Bn…Giulio Ballerini, Gerard Belmont, Laurence Rezeau et al.·Mar 24, 2023SaveLearn
An alternative simulation approach for surface flashover in vacuum using a 1D2V continuum and kinetic modelSurface flashover across insulator in vacuum is a destructive plasma discharge which undermines the behaviors of a range of applications in electrical engineering, particle physics, space…Guang-Yu Sun, Ru-Hui Lian, Shu Zhang et al.·Mar 24, 2023SaveLearn
Stability of the Modulator in a Plasma-Modulated Plasma AcceleratorWe explore the regime of operation of the modulator stage of a recently proposed laser-plasma accelerator scheme [Phys. Rev. Lett. 127, 184801 (2021)], dubbed the Plasma-Modulated Plasma Accelerator…Johannes J. van de Wetering, Simon M. Hooker, Roman Walczak·Mar 24, 2023SaveLearn
Picosecond X-ray Imaging of Shockwaves with Non-Rankine-Hugoniot BehaviorThe first-known observation of plasma-induced cavitation bubbles and expanding shockwaves in liquid during plasma initiation timescales reveals deviation from expected Rankine-Hugoniot shock behavior…Christopher S. Campbell, Mirza Akhter, Samuel Clark et al.·Mar 23, 2023SaveLearn
Resonant instabilities mediated by drag and electrostatic interactions in laboratory and astrophysical dusty plasmasDusty plasmas are known to support a diverse range of instabilities, including both generalizations of standard plasma instabilities and ones caused by effects specific to dusty systems. It has been…Ben Y. Israeli, Amitava Bhattacharjee, Hong Qin·Mar 23, 2023SaveLearn
Plasma kinetics: Discrete Boltzmann modelling and Richtmyer-Meshkov instabilityA discrete Boltzmann model (DBM) for plasma kinetics is proposed. The constructing of DBM mainly considers two aspects. The first is to build a physical model with sufficient physical functions…Jiahui Song, Aiguo Xu, Long Miao et al.·Mar 22, 2023SaveLearn
Accurate simulation of direct laser acceleration in a laser wakefield acceleratorIn a laser wakefield accelerator (LWFA), an intense laser pulse excites a plasma wave that traps and accelerates electrons to relativistic energies. When the pulse overlaps the accelerated electrons,…Kyle G. Miller, John P. Palastro, Jessica L. Shaw et al.·Mar 22, 2023SaveLearn
A Numerical Study of Landau Damping with PETSc-PICWe present a study of the standard plasma physics test, Landau damping, using the Particle-In-Cell (PIC) algorithm. The Landau damping phenomenon consists of the damping of small oscillations in…Daniel S. Finn, Matthew G. Knepley, Joseph V. Pusztay et al.·Mar 22, 2023SaveLearn
A confocal laser-induced fluorescence diagnostic with a ring-shaped laser beamIn this work, we report a confocal laser induced fluorescence (LIF) configuration, which allows for high spatial resolution measurements of plasma properties in plasma setups and sources with a…I. Romadanov, Y. Raitses·Mar 22, 2023SaveLearn
Hermes-3: Multi-component plasma simulations with BOUT++A new open source tool for fluid simulation of multi-component plasmas is presented, based on a flexible software design that is applicable to scientific simulations in a wide range of fields. This…Ben Dudson, Mike Kryjak, Hasan Muhammed et al.·Mar 21, 2023SaveLearn
Controlled transition to different proton acceleration regimes: near-critical density plasmas driven by circularly polarized few cycle pulseWe investigate the different facets of ion acceleration by a relativistically intense circularly polarized laser pulse interacting with thin near-critical density plasma targets. Our simulations…Shivani Choudhary, Sudipta Mondal, Daniele Margarone et al.·Mar 21, 2023SaveLearn
Efficient generation of axial magnetic field by multiple laser beams with twisted pointing directionsStrong laser-driven magnetic fields are crucial for high-energy-density physics and laboratory astrophysics research, but generation of axial multi-kT fields remains a challenge. The difficulty comes…Yin Shi, Alexey Arefiev, Jue Xuan Hao et al.·Mar 21, 2023SaveLearn
Temperature separation under compression of moderately-coupled plasmaIn moderately-coupled plasmas, a significant fraction of the internal energy resides in electric fields. As these plasmas are heated or compressed, the shifting partition of energy between particles…H. Fetsch, T. E. Foster, N. J. Fisch·Mar 20, 2023SaveLearn
Report of the US ITER Research Program Research Needs WorkshopThe US ITER Research Program Basic Research Needs Workshop, held over the course of several months in 2022 with over 400 participants, sought to identify steps to be taken to both maximize the return…Charles Greenfield, Cami Collins, Workshop Participants·Mar 20, 2023SaveLearn
Valley-dependent topological edge states in plasma photonic crystalsPlasma photonic crystals designed in this paper are composed of gas discharge tubes to control the flow of electromagnetic waves. The band structures calculated by the finite element method are…Jianfei Li, Chen Zhou, Jingfeng Yyao et al.·Mar 20, 2023SaveLearn