Stability impacts from the current and pressure profile modifications within finite sized islandThe stability (or instability) of finite sized magnetic island could play a significant role in disruption avoidance or disruption mitigation dynamics. Especially, various current and pressure…Yuxiang Sun, Di Hu·Jun 7, 2024SaveLearn
Direct optimization of neoclassical ion transport in stellarator reactorsWe directly optimize stellarator neoclassical ion transport while holding neoclassical electron transport at a moderate level, creating a scenario favorable for impurity expulsion and retaining good…B. F. Lee, S. A. Lazerson, H. M. Smith et al.·Jun 6, 2024SaveLearn
Efficient backward x-ray emission in a finite-length plasma irradiated by a laser pulse of ps durationMotivated by experiments employing ps-long, kilojoule laser pulses, we examined x-ray emission in a finite-length underdense plasma irradiated by such a pulse using two dimensional particle-in-cell…I-Lin Yeh, Kavin Tangtartharakul, Hongmei Tang et al.·Jun 6, 2024SaveLearn
Flowing plasma rearrangement in the presence of static perturbing fieldsCharged particles interacting with electromagnetic waves have a portion of their energy tied up in wave-driven oscillations. When these waves are localized to the exhaust of linear magnetic…T. Rubin, I. E. Ochs, N. J. Fisch·Jun 6, 2024SaveLearn
Effects of Mosaic Crystal Instrument Functions on X-ray Thomson Scattering DiagnosticsMosaic crystals, with their high integrated reflectivities, are widely-employed in spectrometers used to diagnose high energy density systems. X-ray Thomson scattering (XRTS) has emerged as a…Thomas Gawne, Hannah Bellenbaum, Luke B. Fletcher et al.·Jun 5, 2024SaveLearn
Characterization of foam-filled hohlraums for inertial fusion experimentsOn the path towards high-gain inertial confinement fusion ignition, foams are being considered to tamp the hohlraum wall-motion, and mitigate laser backscattering from Stimulated Raman Scattering…Sam Iaquinta, Peter Amendt, Jose Milovich et al.·Jun 5, 2024SaveLearn
Turbulent relaxation patterns in SOL plasmaRelaxations of localized over-density in a plane transverse to the magnetic field are numericallyinvestigated under the effect of drift-wave and interchange drives in SOL conditions. Such a…R Varennes, G Dif-Pradalier, P Ghendrih et al.·Jun 5, 2024SaveLearn
Nonlinear Ion-Acoustic Waves with Landau Damping in Non-Maxwellian Space PlasmasThe dynamics of nonlinear ion-acoustic solitary waves in the presence of kinetic (Landau type) damping have been investigated in a collisionless, non-magnetized electron-ion plasma. A cold ion fluid…Hadia Mushtaq, Kuldeep Singh, Sadia Zaheer et al.·Jun 5, 2024SaveLearn
Physical Origin of H-ModeThe high confinement mode (H-mode), the most important operation mode for the nuclear fusion reactor, has been studied for 42 years, but the transition mechanism has not been unanimously agreed so…Kwan Chul Lee·Jun 5, 2024SaveLearn
Negative-polarity nanosecond-pulsed cryogenic plasma in liquid nitrogenIn this work we report the results of imaging and spectroscopic measurements of optical emission spectrum of negative nanosecond-pulsed cryogenic discharge in liquid nitrogen. With the application of…Danil Dobrynin, Alexander Fridman·Jun 4, 2024SaveLearn
A compact stellarator-tokamak hybridTokamaks and stellarators are the leading two magnetic confinement devices for producing fusion energy, begging the question of whether the strengths of the two could be merged into a single concept.…S. A. Henneberg, G. G. Plunk·Jun 4, 2024SaveLearn
Error Field Predictability and Consequences for ITERITER coil tolerances are re-evaluated using the modern understanding of coupling to least-stable plasma modes and an updated center-line-traced model of ITER's coil windings. This reassessment…Matthew Pharr, Nikolas Logan, Carlos Paz-Soldan et al.·Jun 3, 2024SaveLearn
Anomalous thermal relaxation in warm ion plasmasWe perform microscopic simulations of the thermal relaxation of warm neutral plasmas of astrophysical importance. Using Molecular Dynamics we study the thermal relaxation of a hot neutral fluid of…David Barba-González, Conrado Albertus, M. Ángeles Pérez-García·Jun 3, 2024SaveLearn
Using Convolutional Neural Networks to detect Edge Localized Modes in DIII-D from Doppler Backscattering measurementsIn H-mode tokamak plasmas, the plasma is sometimes ejected beyond the edge transport barrier. These events are known as edge localized modes (ELMs). ELMs cause a loss of energy and damage the vessel…N. Q. X. Teo, V. H. Hall-Chen, K. Barada et al.·Jun 3, 2024SaveLearn
Regarding the extension of metaplectic geometrical optics to modelling evanescent waves in ray-tracing codesMetaplectic geometrical optics (MGO) is a recently developed ray-tracing framework to accurately compute the wavefield behavior near a caustic (turning point or focal point), where traditional…N. A. Lopez, R. Højlund, M. G. Senstius·Jun 3, 2024SaveLearn
Modulational instability of Geodesic-Acoustic-Mode packetsIsolated, undamped geodesic-acoustic-mode (GAM) packets have been demonstrated to obey a (focusing) nonlinear Schrödinger equation (NLSE) [E. Poli, Phys. Plasmas 2021]. This equation predicts…David Korger, Emanuele Poli, Alessandro Biancalani et al.·Jun 3, 2024SaveLearn
Ohm's Law, the Reconnection Rate, and Energy Conversion in Collisionless Magnetic ReconnectionMagnetic reconnection is a ubiquitous plasma process that transforms magnetic energy into particle energy during eruptive events throughout the universe. Reconnection not only converts energy during…Yi-Hsin Liu, Michael Hesse, Kevin Genestreti et al.·Jun 2, 2024SaveLearn
Gyrokinetic simulation of the spontaneous toroidal rotation of plasma in a stochastic magnetic fieldSince the DIII-D resonant magnetic perturbation experiment [Nucl. Fusion 59, 126010 (2019)] suggests that the neoclassical toroidal viscosity due to the collisional effects associated with the…Jinxiang You, Shaojie Wang·Jun 2, 2024SaveLearn
Generalized Fluid Models of the Braginskii Type. Part 2. The Boltzmann OperatorIn our previous paper (Hunana et al. 2022) we have employed the Landau collisional operator together with the moment method of Grad and considered various generalizations of the Braginskii model,…P. Hunana·Jun 1, 2024SaveLearn
Direct Laser Acceleration of Bethe-Heitler positrons in laser-channel interactionsPositron creation and acceleration is one of the major challenges for constructing future lepton colliders. On the one hand, conventional technology can provide a solution, but at a prohibitive cost…Bertrand Martinez, Robert Babjak, Marija Vranic·May 31, 2024SaveLearn
From Density Response to Energy Functionals and Back: An ab initio perspective on Matter Under Extreme ConditionsEnergy functionals serve as the basis for different models and methods in quantum and classical many-particle physics. Arguably, one of the most successful and widely used approaches in material…Z. Moldabekov, J. Vorberger, T. Dornheim·May 30, 2024SaveLearn
MANTA: A Negative-Triangularity NASEM-Compliant Fusion Pilot PlantThe MANTA (Modular Adjustable Negative Triangularity ARC-class) design study investigated how negative-triangularity (NT) may be leveraged in a compact, fusion pilot plant (FPP) to take a…MANTA Collaboration, G. Rutherford, H. S. Wilson et al.·May 30, 2024SaveLearn
Quasi-isodynamic stellarators with low turbulence as fusion reactor candidatesThe stellarator is a type of fusion energy device that - if properly designed - could provide clean, safe, and abundant energy to the grid. To generate this energy, a stellarator must keep a hot…Alan G. Goodman, Pavlos Xanthopoulos, Gabriel G. Plunk et al.·May 30, 2024SaveLearn
Low-energy collisions between electrons and BeD+Multichannel quantum defect theory is applied in the treatment of the dissociative recombination and vibrational excitation processes for the BeD+ ion in the twenty four vibrational levels of its…S. Niyonzima, N. Pop, F. Iacob et al.·May 30, 2024SaveLearn
The Kinetic Ion-Temperature-Gradient-driven instability and its localisationWe construct a description of Ion Temperature Gradient (ITG) driven localised linear modes which retains both wave-particle and magnetic drift resonant effects while capturing the field-line…Eduardo Rodriguez, Alessandro Zocco·May 29, 2024SaveLearn