Generation of 10 kT Axial Magnetic Fields Using Multiple Conventional Laser Beams: A Sensitivity Study for kJ PW-Class Laser FacilitiesStrong multi-kilotesla magnetic fields have various applications in high-energy density science and laboratory astrophysics, but they are not readily available. In our previous work [Y. Shi et al.,…Jue Xuan Hao, Xiang Tang, Alexey Arefiev et al.·Dec 23, 2023SaveLearn
Monofractality in the solar wind at electron scales: insights from KAW turbulenceThe breakdown of scale invariance in turbulent flows, known as multifractal scaling, is considered a cornerstone of turbulence. In solar wind turbulence, a monofractal behavior can be observed at…Vincent David, Sébastien Galtier, Romain Meyrand·Dec 22, 2023SaveLearn
Filamentation of a Relativistic Proton Bunch in PlasmaWe show in experiments that a long, underdense, relativistic proton bunch propagating in plasma undergoes the oblique instability, that we observe as filamentation. We determine a threshold value for…L. Verra, C. Amoedo, N. Torrado et al.·Dec 21, 2023SaveLearn
Comments to Marvel Fusions Mixed Fuels Reactor ConceptNanostructured solid boron-hydrogen compounds have been suggested as target and fuel for laser fusion, offering improved laser-plasma coupling, avoiding cryogenic fuel handling and fuel…Karl Lackner, Rainer Burhenn, Sina Fietz et al.·Dec 20, 2023SaveLearn
Anisotropic cold plasma modes in chiral vector Maxwell-Carroll-Field-Jackiw electrodynamicsIn this work, we study the propagation and absorption of plasma waves in the context of the Maxwell-Carroll-Field-Jackiw (MCFJ) electrodynamics with a purely spacelike background playing the role of…Filipe S. Ribeiro, Pedro D. S. Silva, Manoel M. Ferreira·Dec 20, 2023SaveLearn
Local momentum balance in electromagnetic gyrokinetic systemsThe Eulerian variational formulation is presented to obtain governing equations of the electromagnetic turbulent gyrokinetic system. A local momentum balance in the system is derived from the…H. Sugama·Dec 20, 2023SaveLearn
Modelling of impurity heating during reconnections in a Reverse Field Pinch device as due to parallel electric field acceleration and chaos-induced thermalizationThe ion temperature during magnetic reconnections measured along the direction of the magnetic field at the MST Reverse Field Pinch has not yet received a satisfactory theoretical explanation. In…F. Sattin, D. F. Escande, M. Gobbin et al.·Dec 20, 2023SaveLearn
Enhancing Disruption Prediction through Bayesian Neural Network in KSTARDisruption in tokamak plasmas, stemming from various instabilities, poses a critical challenge, resulting in detrimental effects on the associated devices. Consequently, the proactive prediction of…Jinsu Kim, Jeongwon Lee, Jaemin Seo et al.·Dec 20, 2023SaveLearn
Automated Estimation of Plasma Temperature and Density from Emission SpectroscopyThis paper introduces a novel approach for automated estimation of plasma temperature and density using emission spectroscopy, integrating Bayesian inference with sophisticated physical models. We…Todd A. Oliver, Craig Michoski, Samuel Langendorf et al.·Dec 20, 2023SaveLearn
Enhancing predictive capabilities in fusion burning plasmas through surrogate-based optimization in core transport solversThis work presents the PORTALS framework, which leverages surrogate modeling and optimization techniques to enable the prediction of core plasma profiles and performance with nonlinear gyrokinetic…P. Rodriguez-Fernandez, N. T. Howard, A. Saltzman et al.·Dec 19, 2023SaveLearn
MONKES: a fast neoclassical code for the evaluation of monoenergetic transport coefficientsMONKES is a new neoclassical code for the evaluation of monoenergetic transport coefficients in stellarators. By means of a convergence study and benchmarks with other codes, it is shown that MONKES…F. J. Escoto, J. L. Velasco, I. Calvo et al.·Dec 19, 2023SaveLearn
Spatiotemporal control of high-intensity laser pulses with a plasma lensSpatiotemporal control encompasses a variety of techniques for producing laser pulses with dynamic intensity peaks that move independently of the group velocity. This controlled motion of the…D. Li, K. G. Miller, J. R. Pierce et al.·Dec 19, 2023SaveLearn
From linear to nonlinear Breit-Wheeler pair production in laser-solid interactionsDuring the ultraintense laser interaction with solids (overdense plasmas), the competition between two possible quantum electrodynamics (QED) mechanisms responsible for e pair production, i.e.,…Huai-Hang Song, Wei-Min Wang, Min Chen et al.·Dec 17, 2023SaveLearn
Laser Measurement of Anomalous Electron Diffusion in a Crossed-Field PlasmaNon-classical electron diffusion in crossed-field, low-temperature plasmas is measured experimentally. Laser-induced fluorescence and Thomson scattering are used to determine the inverse Hall…Parker J. Roberts, Benjamin A. Jorns·Dec 16, 2023SaveLearn
Laser Thomson Scattering Measurements around Magnetized Model in Rarefied Argon Arcjet PlumeTo elucidate the role of the Hall effect in magnetohydrodynamic (MHD) aerobraking in rarefied flows,we measured the radial distributions of electron temperature and density in front of a magnetized…H. Katsurayama, R. Wada, K. Moriyama et al.·Dec 15, 2023SaveLearn
Intrinsic toroidal rotation driven by turbulent and neoclassical processes in tokamak plasmas from global gyrokinetic simulationsGyrokinetic tokamak plasmas can exhibit intrinsic toroidal rotation driven by the residual stress. While most studies have attributed the residual stress to the parallel-momentum flux from the…Hongxuan Zhu, T. Stoltzfus-Dueck, R. Hager et al.·Dec 15, 2023SaveLearn
Electrostatic microturbulence in W7-X: comparison of local gyrokinetic simulations with Doppler reflectometry measurementsThe first experimental campaigns of Wendelstein 7-X (W7-X) have shown that turbulence plays a decisive role in the performance of neoclassically optimized stellarators. This stresses the importance…A. González-Jerez, J. M. García-Regaña, I. Calvo et al.·Dec 15, 2023SaveLearn
A multifidelity Bayesian optimization method for inertial confinement fusion designDue to their cost, experiments for inertial confinement fusion (ICF) heavily rely on numerical simulations to guide design. As simulation technology progresses, so too can the fidelity of models used…J. Wang, N. Chiang, A. Gillette et al.·Dec 15, 2023SaveLearn
Neural networks for turbulent transport prediction in a simplified model of tokamak plasmasThe method of using neural networks (NNs) for turbulent transport prediction in a simplified model of tokamak plasmas is explored. The NNs are trained on a database obtained via test-particle…L. M. Pomârjanschi·Dec 15, 2023SaveLearn
Characteristics of Branched Flows of High-Current Relativistic Electron Beams in Porous MaterialsBranched flow is a universal phenomenon in which treebranch-like filaments form through traveling waves or particle flows in irregular mediums. Branched flow of high-current relativistic electron…K. Jiang, T. W. Huang, R. Li et al.·Dec 15, 2023SaveLearn
Sheath Analysis of Conducting Channel Walls in Anode-Layer Hall Thruster with Acceleration Zone Shifted DownstreamChannel wall sheath thickness in an anode-layer Hall thruster RAIJIN66 was investigated by a two-dimensional hybrid simulation and a one-dimensional sheath model. A hybrid particle-fluid model with…Rei Kawashima·Dec 15, 2023SaveLearn
A semi-analytical model of RF condensation that can handle localized power depositionsA nonlinear effect, RF (radio frequency) condensation, can be used to facilitate RF stabilization of magnetic islands. Previously studied semi-analytical models for RF condensation are suited mainly…Ben Bobell, Danny Sun, Allan H. Reiman·Dec 14, 2023SaveLearn
Asymptotic quasisymmetric high-beta 3D MHD equilibria near axisymmetryQuasisymmetry (QS), a hidden symmetry of the magnetic field strength, is known to support nested flux surfaces and provide superior particle confinement in stellarators. In this work, we study the…W. Sengupta, N. Nikulsin, R. Gaur et al.·Dec 14, 2023SaveLearn
Validation of the thermo-chemical approach to modelling of the CO2 conversion in atmospheric pressure microwave gas dischargesThe 2.45 GHz plasma torch CO2 CO + 12O2 conversion experiment [F A D"Isa et al. Plasma Sources Sci. Technol., vol. 29 (2020) 105009] has been compared with thermo-chemical…Vladislav Kotov, Christian Kiefer, Ante Hecimovic·Dec 14, 2023SaveLearn
Collisionless cooling of perpendicular electron temperature in the thermal quench of a magnetized plasmaThermal quench of a nearly collisionless plasma against a cooling boundary or region is an undesirable off-normal event in magnetic fusion experiments, but an ubiquitous process of cosmological…Yanzeng Zhang, Jun Li, Xianzhu Tang·Dec 13, 2023SaveLearn