Diffusive transport of a 2-D magnetized dusty plasma cloudDusty plasma medium turns out to be an ideal system for studying the strongly coupled behavior of matter. The large size and slow response make their dynamics suitable to be captured through simple…Aman Singh Katariya, Amita Das, Animesh Sharma et al.·Aug 29, 2024SaveLearn
Surrogate Models studies for laser-plasma accelerator electron source design through numerical optimisationDesigning a high-quality plasma injector electron source driven by a laser beam relies on numerical parametric studies using particle-in-cell codes. The common input parameters to explore are laser…G. Kane, P. Drobniak, S. Kazamias et al.·Aug 28, 2024SaveLearn
Multi-component multi-scale hydrodynamic plasma flow models in mechanical and thermal disequilibriaThe present work is motivated by the mixing mechanism in inertial confinement fusion (ICF), which remarkably degrades the ignition performance. The mixing is a direct result of velocity…Chao Zhang·Aug 28, 2024SaveLearn
Simulation and analysis of a high-k electron scale turbulence diagnostic for MAST-UPlasma turbulence on disparate spatial and temporal scales plays a key role in defining the level of confinement achievable in tokamaks, with the development of reduced numerical models for…David C. Speirs, Juan Ruiz-Ruiz, Maurizio Giacomin et al.·Aug 28, 2024SaveLearn
Indirect nonlinear interaction between toroidal Alfvén eigenmode and ion temperature gradient mode mediated by zonal structuresThe indirect nonlinear interactions between toroidal Alfvén eigenmode (TAE) and ion temperature gradient mode (ITG) are investigated using nonlinear gyrokinetic theory and ballooning mode formalism.…Qian Fang, Guangyu Wei, Ningfei Chen et al.·Aug 28, 2024SaveLearn
Statistical inference of collision frequencies from x-ray Thomson scattering spectraThomson scattering spectra measure the response of plasma particles to incident radiation. In warm dense matter, which is opaque to visible light, x-ray Thomson scattering (XRTS) enables a detailed…Thomas W. Hentschel, Alina Kononov, Andrew D. Baczewski et al.·Aug 27, 2024SaveLearn
Opportunities in Pulsed Magnetic Fusion EnergyFusion is a potentially transformational energy technology, which promises limitless clean energy. Yet, it requires continued scientific and technological development to realize its potential. The…C. Leland Ellison, Vincent Garcia, Matthew Gomez et al.·Aug 27, 2024SaveLearn
Non-thermal fusion burning processes, relevant collective modes and gained perspectivesNew tridimensional plasma structures, that are oscillatory and classified as non-separable ballooning modes, can emerge in inhomogeneous plasmas and undergo resonant mode-particle interactions, e.g.,…B. Coppi, B. Basu·Aug 27, 2024SaveLearn
Suppression of Collisionless Magnetic Reconnection in the High Ion β, Strong Guide Field LimitIn magnetic reconnection, the ion bulk outflow speed and ion heating have been shown to be set by the available reconnecting magnetic energy, i.e., the energy stored in the reconnecting magnetic…Carlos A. Giai, Colby C. Haggerty, Michael A. Shay et al.·Aug 27, 2024SaveLearn
Application of Neural Ordinary Differential Equations for ITER Burning Plasma DynamicsThe dynamics of burning plasmas in tokamaks are crucial for advancing controlled thermonuclear fusion. This study applies the NeuralPlasmaODE, a multi-region multi-timescale transport model, to…Zefang Liu, Weston M. Stacey·Aug 26, 2024SaveLearn
Experiment Research on Feasibility of In-Situ Plasma Cleaning in Normal-conducting Copper CavitiesTo assess the feasibility of in-situ plasma cleaning for copper cavities, a 13.56 MHz inductively coupled plasma platform with a built-in coil was developed at Tsinghua University. Experiments were…Qianxu Xia, Lianmin Zheng, Yingchao Du·Aug 26, 2024SaveLearn
A model of generation of a jet in stratified nonequilibrium plasmaIn the magnetohydrodynamic approximation, system of equations is proposed which analytically describes the initial stage of origination of axially symmetric directed flows in nonequilibrium…O. G. Onishchenko, S. N. Artekha, N. S. Artekha·Aug 26, 2024SaveLearn
Formation of quasi-single helicity state from a paramagnetic pinch in KTX regimeThe formation of quasi-single helicity (QSH) state from a paramagnetic pinch in the KTX-RFP regime has been observed in recent NIMROD simulations. The quasi-single helicity state has a dominant…Bing Luo, Ping Zhu, Wentan Yan et al.·Aug 26, 2024SaveLearn
Does Magnetic Reconnection Change Topology?We employ well-known concepts from statistical physics, quantum field theories and general topology to study magnetic reconnection, topology-change and their connection in incompressible flows in the…Amir Jafari·Aug 25, 2024SaveLearn
Verification of Fast Ion Effects on Turbulence through Comparison of GENE and CGYRO with L-mode Plasmas in KSTARThis study presents a cross-verification of fast ion effects on turbulence through a systematic comparison of two leading gyrokinetic codes, GENE [F. Jenko et al., Phys. Plasmas 7 1904-1910 (2000)]…Donguk Kim, Taeuk Moon, Choongki Sung et al.·Aug 25, 2024SaveLearn
Conceptual Study of a Collective Thomson Scattering Diagnostic for SPARCThe SPARC tokamak is a compact high-field device that will operate at high plasma density with the aim to demonstrate net fusion energy. The experimentally unexplored plasma conditions in SPARC will…Mads Mentz-Jørgensen, Riccardo Ragona, Søren B. Korsholm et al.·Aug 24, 2024SaveLearn
Drift instabilities driven by slab ion temperature gradient in suprathermal plasmasThe drift instabilities driven by the slab ion temperature gradient (ITG) in Kappa-distributed plasmas are investigated by the kinetic method. The linear dispersion relation is given in an integral…Ran Guo·Aug 24, 2024SaveLearn
Observation and characterisation of trapped electron modes in Wendelstein 7-XIn the past, quasi coherent modes were reported for nearly all tokamaks. The general definition describes modes as quasi coherent when the magnitude squared coherence is in the range of…A. Krämer-Flecken, J. H. E. Proll, G. Weir et al.·Aug 23, 2024SaveLearn
Self-triggered strong-field QED collisions in laser-plasma interactionExploring quantum electrodynamics in the most extreme conditions, where electron-positron pairs can emerge in the presence of a strong background field, is now becoming possible in Compton collisions…Aimé Matheron, Igor Andriyash, Xavier Davoine et al.·Aug 23, 2024SaveLearn
Laser-Driven Proton-Only Acceleration in a Multicomponent Near-Critical-Density PlasmaAn experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and a high-intensity picosecond duration laser pulse. Protons are the only accelerated…Y. Sakawa, H. Ishihara, S. N. Ryazantsev et al.·Aug 23, 2024SaveLearn
Beam focusing and consequences for Doppler Backscattering measurementsThe phenomenon of beam focusing of microwaves in a plasma near a turning-point caustic is discussed in the context of the analytical solution to the Gaussian beam-tracing equations in the 2D…Juan Ruiz Ruiz, Felix I. Parra, Valerian H. Hall-Chen et al.·Aug 23, 2024SaveLearn
Neural network assisted electrostatic global gyrokinetic toroidal code using cylindrical coordinatesGyrokinetic simulation codes are used to understand the microturbulence in the linear and nonlinear regimes of the tokamak and stellarator core. The codes that use flux coordinates to reduce…Jaya Kumar Alageshan, Joydeep Das, Tajinder Singh et al.·Aug 23, 2024SaveLearn
BxC Toolkit: Generating Tailored Turbulent 3D Magnetic FieldsTurbulent states are ubiquitous in plasmas and the understanding of turbulence is fundamental in modern astrophysics. Numerical simulations, which are the state-of-the-art approach to the study of…Daniela Maci, Rony Keppens, Fabio Bacchini·Aug 23, 2024SaveLearn
Physics of the low momentum diffusivity regime in tokamaks and its experimental applicabilityStrong E× B plasma flow shear is beneficial for reducing turbulent transport. However, traditional methods of driving flow shear do not scale well to large devices such as future fusion power…Haomin Sun, Justin Ball, Stephan Brunner et al.·Aug 22, 2024SaveLearn
Evaluating ion dynamics through Coulomb and Yukawa interaction potentials in one component strongly coupled plasmasAtmospheric pressure helium plasmas are investigated through molecular dynamics simulations at room temperature (300 K) for various ionization fractions (χi = 10-1 - 10-5) in the strongly…Swati Swagatika Mishra, Pascal Brault, Sudeep Bhattacharjee·Aug 22, 2024SaveLearn