Operando XPS in Reactive Plasmas: The Importance of The Wall ReactionsAdvancements in differential pumping and electron optics over the past few decades have enabled x-ray photoelectron spectroscopy (XPS) measurements at (near-)ambient pressures, bridging the pressure…J. Trey Diulus, Ashley R. Head, Jorge Anibal Boscoboinik et al.·Feb 26, 2025SaveLearn
A space-resolved visible spectrometer system using compact endoscopic optics for full vertical profile measurement of impurity line emissions in superconducting EAST tokamakIn Experimental Advanced Superconducting Tokamak (EAST tokamak) with tungsten divertors and molybdenum first wall, lithiumization and boronization have been frequently carried out to improve the…A. Hu, Y. Cheng, L. Zhang et al.·Feb 26, 2025SaveLearn
Eulerian and Lagrangian electron energization during magnetic reconnectionElectron energization by magnetic reconnection has historically been studied in the Lagrangian guiding-center framework. Insights from such studies include that Fermi acceleration in magnetic islands…Konrad Steinvall, Louis Richard, Tünde Fülöp et al.·Feb 25, 2025SaveLearn
Modelling of a large-scale non-insulated non-planar HTS stellarator coil using Quanscient AllsolveStellarators present features such as steady-state operation and intrinsic stability that make them more attractive than tokamaks in their scaling to fusion power plants. By leveraging more possible…Tara Benkel, Mika Lyly, Janne Ruuskanen et al.·Feb 25, 2025SaveLearn
Deuterium retention in pre-lithiated samples and Li-D co-deposits in the DIII-D tokamakDivertor designs involving liquid lithium have been proposed as an alternative to solid designs and wall conditioning techniques. However, Li affinity with tritium poses a risk for the fuel cycle.…M. Morbey, F. Effenberg, S. Abe et al.·Feb 25, 2025SaveLearn
Mean-field dynamo as a quantumlike modulational instabilityPresented here is a novel formulation of the mean-field dynamo as a modulational instability of magnetohydrodynamic (MHD) turbulence. This formulation, termed mean-field wave kinetics (MFWK), is…S. Jin, I. Y. Dodin·Feb 25, 2025SaveLearn
Spatiotemporal optical vortex (STOV) polaritonWe confirm the existence of a new bulk medium quasiparticle with transverse orbital angular momentum (tOAM) and elucidate its physical origin. The tOAM structure is driven by torques induced by the…M. S. Le, S. W. Hancock, N. Tripathi et al.·Feb 24, 2025SaveLearn
Neural operator surrogate models of plasma edge simulations: feasibility and data efficiencyThe inclusion of high-fidelity simulations of SOL turbulence and transient MHD events such as ELMs in highly iterative applications remains computationally prohibitive, limiting their use in design…N. Carey, L. Zanisi, S. Pamela et al.·Feb 24, 2025SaveLearn
The Energy Cascade Rate in Supersonic Magnetohydrodynamic TurbulenceThree-dimensional direct numerical simulations (DNS) are implemented to investigate the energy cascade rate in compressible isothermal magnetohydrodynamic (MHD) turbulence. Utilizing an exact law…Gonzalo Javier Alvarez, Pablo Dmitruk, Branislav Rabatin et al.·Feb 24, 2025SaveLearn
Measurement of energy reduction by inertial Alfvén waves propagating through parallel gradients in the Alfvén speedWe have studied the propagation of inertial Alfvén waves through parallel gradients in the Alfvén speed using the Large Plasma Device at the University of California, Los Angeles. The reflection and…Garima Joshi, Sayak Bose, Troy Carter et al.·Feb 24, 2025SaveLearn
Robust Confinement State Classification with Uncertainty Quantification through Ensembled Data-Driven MethodsMaximizing fusion performance in tokamaks relies on high energy confinement, often achieved through distinct operating regimes. The automated labeling of these confinement states is crucial to enable…Yoeri Poels, Cristina Venturini, Alessandro Pau et al.·Feb 24, 2025SaveLearn
Quenching Rates of N2(C3Πu , ν = 0-4) States by O2, N2, H2, CO2 and CH4This work presents the development of a protocol for the measurement of collisional deexcitation rate constants of N2(C3Πu , ν = 0-4) States by O2, N2, H2, CO2 and CH4.…Jean-Loup Du Garreau de la Méchenie, Jean-Baptiste Perrin-Terrin, Christophe O Laux·Feb 24, 2025SaveLearn
Electron-scale Kelvin-Helmholtz instability in magnetized shear flowsElectron-scale Kelvin-Helmholtz instabilities (ESKHI) are found in several astrophysical scenarios. Naturally ESKHI is subject to a background magnetic field, but an analytical dispersion relation…Yao Guo, Dong Wu, Jie Zhang·Feb 23, 2025SaveLearn
Boltzsim: A fast solver for the 1D-space electron Boltzmann equation with applications to radio-frequency glow discharge plasmasWe present an algorithm for solving the one-dimensional space collisional Boltzmann transport equation (BTE) for electrons in low-temperature plasmas (LTPs). Modeling LTPs is useful in many…Milinda Fernando, James Almgren-Bell, Todd Oliver et al.·Feb 23, 2025SaveLearn
Discharge structure hierarchy of highly electronegative plasma and the implication on nuclear fusion at low pressure and quasi-cold ions approximationIn this paper, the discharge structure of an Ar/SF6 inductively coupled plasma (ICP) at the low pressure, 10 mTorr, is investigated by the fluid simulation at the quasi-cold ions approximation, i.e.,…Yuanhe Sun, Shuxia Zhao, Ruiji Tang et al.·Feb 23, 2025SaveLearn
First observation of shock waves induced by laser-accelerated proton beamsWe demonstrate, for the first time, that laser-accelerated protons can induce shock waves in materials. The ultra-short pulse width of laser-driven protons enables them to deposit energy…Yanlyu Fang, Xiaoyun Le, Yang Yan et al.·Feb 22, 2025SaveLearn
Electric Power Enhancement using Spin-Polarized Fuel in Fusion Power PlantsUsing a range of fusion power plant (FPP) concepts, we demonstrate that spin-polarized fuel (SPF) can significantly enhance net electric power output, often by many multiples. Notably, the electric…J. F. Parisi, A. Diallo·Feb 21, 2025SaveLearn
Exploration of Helicon Plasmas for Wakefield Accelerators at the Madison AWAKE PrototypePlasma wakefield accelerators have the potential to revolutionize particle physics by providing lepton collision energies orders of magnitude beyond current technology. Crucially, these accelerators…Marcel Granetzny, Barret Elward, Michael Zepp et al.·Feb 20, 2025SaveLearn
Enhanced dynamo drive for the sawtooth relaxation process due to non-uniform resistivity distribution in a reversed field pinchIn this work, we use the three-dimensional resistive MHD code NIMROD to investigate the impact of resistivity inhomogeneity on the sawtooth process of an reversed field pinch (RFP) plasma. The…Wentan Yan, Ping Zhu, Hong Li et al.·Feb 20, 2025SaveLearn
Leaky surface plasmon-based wakefield acceleration in nanostructured carbon nanotubesMetallic carbon nanotubes (CNTs) can provide ultra-dense, homogeneous plasma capable of sustaining resonant plasma waves-known as plasmons-with ultra-high field amplitudes. These waves can be…Bifeng Lei, Hao Zhang, Cristian Bontoiu et al.·Feb 19, 2025SaveLearn
Temperature Dependence of Beam on Plasma Stopping Power in the Resonance Regions of Fusion ReactionsA recent proposal of accelerator based fusion reactor considers a scheme where an ion beam from the accelerator hits the target plasma on the resonance of the fusion reaction so that the reactivity…Keh-Fei Liu·Feb 19, 2025SaveLearn
Power dependence of density limit due to plasma-wall interaction in a burning plasmaThe density limit is one of the major obstacles to achieving the desired fusion performance in tokamaks. However, the underlying physics mechanism for its recently observed power dependence in…Jiaxing Liu, Ping Zhu, Dominique Franck Escande·Feb 19, 2025SaveLearn
Neutral particle analyzer for plasma diagnostics on tokamak ST40The paper presents a detailed description of a neutral particle analyzer designed and produced for plasma diagnostics on the spherical tokamak ST40. The aim of the diagnostic is to measure both the…Sergey Polosatkin, Vasily Belykh, Andrey Rovenskikh·Feb 19, 2025SaveLearn
Plasma rotation driven by lasers with zero angular momentumWe present a novel mechanism in which plasma electrons and ions optically acquire angular momentum during local pump depletion of an azimuthally polarized laser, despite the laser carrying none.…Camilla Willim, Thales Silva, Luís Oliveira Silva et al.·Feb 18, 2025SaveLearn
Multiscale numerical methods for isothermal fluid models of confined plasmasThe aim of this work is to introduce a numerical method to cope with the multiscale nature of confined plasma physics. These investigations are focused on fluid plasma description under large…Chang Yang, Fabrice Deluzet·Feb 18, 2025SaveLearn