Numerical implications of including drifts in SOLPS-ITER simulations of EASTThe inclusion of drifts in plasma edge codes like SOLPS-ITER is required to match simulation data with experimental profiles. However, this remains numerically challenging. In this paper, the effect…Dieter Boeyaert, Stefano Carli, Wouter Dekeyser et al.·Nov 24, 2023SaveLearn
Laser polarization control of ionization-injected electron beams and x-ray radiation in laser wakefield acceleratorsIn this paper we have studied the influence of the laser polarization on the dynamics of the ionization-injected electron beams and subsequently the properties of the emitted betatron radiation in…Arghya Mukherjee, Daniel Seipt·Nov 24, 2023SaveLearn
The maximum-J property in quasi-isodynamic stellaratorsSome stellarators tend to benefit from favourable average magnetic curvature for trapped particles when the plasma pressure is sufficiently high. This so-called maximum-J-property has several…E. Rodriguez, P. Helander, A. G. Goodman·Nov 24, 2023SaveLearn
Turbulence and particle energization in twisted flux ropes in solar-wind conditionsContext. The mechanisms regulating the transport and energization of charged particles in space and astrophysical plasmas are still debated. Plasma turbulence is known to be a powerful particle…Oreste Pezzi, Domenico Trotta, Simone Benella et al.·Nov 24, 2023SaveLearn
Efficient generation of intense spatial and spatiotemporal vortex harmonics using plasma mirrorsIntense spatial or spatiotemporal vortex pulses from the extreme ultraviolet to soft X-ray spectral windows are expected to provide new degrees of freedom for a variety of key applications since they…Yipeng Wu, Zan Nie, Fei Li et al.·Nov 23, 2023SaveLearn
Efficient generation and amplification of intense vortex and vector laser pulses via strongly coupled stimulated Brillouin scattering in plasmasThe past decade has seen tremendous progress in the production and utilization of vortex and vector laser pulses. Although both are considered as structured light beams, the vortex lasers have…Yipeng Wu, Chaojie Zhang, Zan Nie et al.·Nov 23, 2023SaveLearn
Extraction of n = 0 pick-up by locked mode detectors based on neural networks in J-TEXTMeasurement of locked mode (LM) is important for the physical research of Magnetohydrodynamic (MHD) instabilities and plasma disruption. The n = 0 pick-up need to be extracted and subtracted to…Chengshuo Shen, Jianchao Li, Yonghua Ding et al.·Nov 23, 2023SaveLearn
Grad-Shafranov equilibria via data-free physics informed neural networksA large number of magnetohydrodynamic (MHD) equilibrium calculations are often required for uncertainty quantification, optimization, and real-time diagnostic information, making MHD equilibrium…Byoungchan Jang, Alan A. Kaptanoglu, Rahul Gaur et al.·Nov 22, 2023SaveLearn
Dense polarized positrons from beam-solid interactionsRelativistic positron sources with high spin polarization have important applications in nuclear and particle physics and many frontier fields. However, it is challenging to produce dense polarized…Xing-Long Zhu, Wei-Yuan Liu, Tong-Pu Yu et al.·Nov 21, 2023SaveLearn
Transformer ratio growth due to ion motion in plasma wakefield acceleratorsWe report a recently discovered counterintuitive effect where breaking of a Langmuir wave in a plasma wakefield accelerator leads to an increase in the accelerating field rather than wave…V. A. Minakov, K. V. Lotov·Nov 21, 2023SaveLearn
Properties of Intense Electromagnetic Ion Cyclotron Waves: Implications for Quasi-linear, Nonlinear, and Nonresonant Wave-Particle InteractionsResonant interactions between relativistic electrons and electromagnetic ion cyclotron (EMIC) waves provide an effective loss mechanism for this important electron population in the outer radiation…Xiaofei Shi, Anton Artemyev, Xiao-Jia Zhang et al.·Nov 20, 2023SaveLearn
Control of energy spectra and enhancement of energy conversion of fast electrons generated by dual-color picosecond lasersAfter the successful fusion ignition at National Ignition Facility, seeking for a high-gain fusion scheme becomes the next hot-spot in inertial confinement fusion community. Fast ignition provides an…Tie-Huai Zhang, Wei-Min Wang, Yu-Tong Li et al.·Nov 20, 2023SaveLearn
Cross-Tokamak Deployment Study of Plasma Disruption Predictors Based on Convolutional AutoencoderIn the initial stages of operation for future tokamak, facing limited data availability, deploying data-driven disruption predictors requires optimal performance with minimal use of new device data.…Xinkun Ai, Wei Zheng, Ming Zhang et al.·Nov 17, 2023SaveLearn
A high-intensity laser-based positron sourcePlasma based acceleration is considered a promising concept for the next generation of linear electron-positron colliders. Despite the great progress achieved over last twenty years in laser…S. S. Bulanov, C. Benedetti, D. Terzani et al.·Nov 17, 2023SaveLearn
Plasma Fixed Nitrogen (PFN) Improves Lettuce Field Holding PotentialWe show that plasma fixed nitrogen (PFN) as a biostimulant can improve marketable lettuce yield following delayed harvest. Using just one-tenth of the conventional nitrogen, PFN, generated by a…Benjamin Wang, Qiyang Hu, Bruno Felix Castillo et al.·Nov 15, 2023SaveLearn
Rapid assimilation of high-Z impurity ions along the magnetic field line from an ablated pelletThe assimilation of ablated high-Z impurities into the hot surrounding plasma along the magnetic field is investigated by first-principles kinetic simulations. It is found that the assimilated…Haotian Mao, Yanzeng Zhang, Xianzhu Tang·Nov 15, 2023SaveLearn
Plasma sheath tailoring by a magnetic field for three-dimensional plasma etchingThree-dimensional (3D) etching of materials by plasmas is an ultimate challenge in microstructuring applications. A method is proposed to reach a controllable 3D structure by using masks in front of…E. Jüngling, S. Wilczek, T. Mussenbrock et al.·Nov 15, 2023SaveLearn
Analysis of the neutral fluxes in the divertor region of Wendelstein 7-X under attached and detached conditions using EMC3-EIRENEThis paper analyzes the neutral fluxes in the divertor region of the W7-X standard configuration for different input powers, both under attached and detached conditions. The performed analysis is…Dieter Boeyaerta, Yuhe Feng, Heinke Frerichs et al.·Nov 15, 2023SaveLearn
High-Resolution Particle-In-Cell Simulations of Two-Dimensional Bernstein-Greene-Kruskal ModesWe present two dimensional (2D) particle-in-cell (PIC) simulations of 2D Bernstein-Greene-Kruskal (BGK) modes, which are exact nonlinear steady-state solutions of the Vlasov-Poisson equations, on a…J. McClung, M. T. Franciscovich, K. Germaschewski et al.·Nov 15, 2023SaveLearn
Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challengeExhausting power from the hot fusion core to the plasma-facing components is one of the biggest challenges in fusion energy. The MAST Upgrade tokamak uniquely integrates strong containment of…K. Verhaegh, J. R. Harrison, D. Moulton et al.·Nov 14, 2023SaveLearn
Investigations of atomic \& molecular processes of NBI-heated discharges in the MAST Upgrade Super-X divertor with implications for reactorsThis experimental study presents an in-depth investigation of the performance of the MAST-U Super-X divertor during NBI-heated operation (up to 2.5 MW) focussing on volumetric ion sources and sinks…K. Verhaegh, J. R. Harrison, B. Lipschultz et al.·Nov 14, 2023SaveLearn
Influence of Plasma Density Arrangement on Millimeter-Wave Transmission CharacteristicsThe advancement of millimeter wave and terahertz technologies have revolutionized high speed wireless networks and precise tracking systems. These technologies offer unique penetration capabilities…Wenbo Liu, Peian Li, Guohao Liu et al.·Nov 14, 2023SaveLearn
Speed of sound in methane under conditions of planetary interiorsWe present direct observations of acoustic waves in warm dense matter. We analyze wave-number- and energy-resolved x-ray spectra taken from warm dense methane created by laser heating a cryogenic…Thomas G. White, Hannah Poole, Emma E. McBride et al.·Nov 13, 2023SaveLearn
Feasibility and Performance of the Staged Z-Pinch: A One-dimensional Study with FLASH and MACH2Z-pinch platforms constitute a promising pathway to fusion energy research. Here, we present a one-dimensional numerical study of the staged Z-pinch (SZP) concept using the FLASH and MACH2 codes. We…Edward C. Hansen, Fernando Garcia-Rubio, Marissa B. P. Adams et al.·Nov 13, 2023SaveLearn
Joule-Class Pulsed THz Sources from Microchannel TargetsInference of joule-class THz radiation sources from microchannel targets driven with hundreds of joule, picosecond lasers is reported. THz sources of this magnitude are useful for nonlinear pumping…G. Bruhaug, H. G. Rinderknecht, K. Weichman et al.·Nov 13, 2023SaveLearn