Laser pulse shape designer for direct-drive inertial confinement fusionA pulse shape designer for direct drive inertial confinement fusion has been developed, it aims at high compression of the fusion fuel while keeping hydrodynamics instability within tolerable level.…Tao Tao, Guannan Zheng, Qing Jia et al.·Apr 20, 2022SaveLearn
Linear kinetic effects of core plasma on low frequency Alfven and acoustic eigenmodes in tokamaksThe resonant and non-resonant effects of core plasma on the excitation of low frequency modes with ω< ωBAE, such as Beta-induced Alfvén Acoustic Eigenmodes (BAAEs) and Kinetic Ballooning Modes…Ilija Chavdarovski, Fulvio Zonca, Liu Chen·Apr 20, 2022SaveLearn
Electric field in spatially inhomogeneous non-neutral plasmaWe present a general expression for the probability distribution function of electric field in a plasma cloud formed by the impact of a laser pulse on a gas or a solid body. We also present the…S. Ya. Bronin, E. V. Vikhrov, B. B. Zelener et al.·Apr 20, 2022SaveLearn
Existence of weakly quasisymmetric magnetic fields in asymmetric toroidal domains with non-tangential quasisymmetryA quasisymmetry is a special symmetry that enhances the ability of a magnetic field to trap charged particles. Quasisymmetric magnetic fields may allow the realization of next generation fusion…Naoki Sato·Apr 20, 2022SaveLearn
Optimizing doping parameters of target to enhance direct-drive implosionDirect-drive is an important approach to achieving the ignition of inertial confinement fusion. To enhance implosion performance while keeping the risk of hydrodynamic instability at a low level, we…Guannan Zheng, Tao Tao, Qing Jia et al.·Apr 20, 2022SaveLearn
Flat bubble regime and laminar plasma flow in a plasma wake field acceleratorA simple 2D model of the bubble formation in a plasma wakefield accelerator is developed and investigated. It is shown that in the case of a flat driver the bubble may consist of two parts that…S. S. Baturin·Apr 19, 2022SaveLearn
Mitigating laser imprint with a foam overcoatingFoam has been suggested to reduce laser imprint because of its low density. In this paper, the two-dimensional radiation hydrodynamic code FLASH is applied to investigate and characterize the…D. X. Liu, T. Tao, J. Li et al.·Apr 19, 2022SaveLearn
Efficient Generation of Tunable Magnetic and Optical Vortices Using PlasmasPlasma is an attractive medium for generating strong microscopic magnetic structures and tunable electromagnetic radiation with predictable topologies due to its extraordinary ability to sustain and…Yipeng Wu, Xinlu Xu, Chaojie Zhang et al.·Apr 19, 2022SaveLearn
All-optical Compton photon source generation via modulating pulse profile by convex focusing plasma mirrorA relatively efficient scheme to generate energetic γ-ray is all-optical Compton scattering based on wakefield acceleration and plasma mirror where planar or concave solid target is usually…Q. Yu·Apr 17, 2022SaveLearn
Two-dimensional shaping of Solov'ev equilibrium with vacuum using external coilsIn this work, we demonstrate a method for constructing the Solov'ev equilibrium with any given 2D shape surrounded by a vacuum region using external poloidal field coils. The computational domain…Jiaxing Liu, Ping Zhu, Haolong Li·Apr 17, 2022SaveLearn
Quasi-static magnetic compression of field-reversed configuration plasma: Amended scalings and limits from two-dimensional MHD equilibriumIn this work, several key scaling laws of the quasi-static magnetic compression of field reversed configuration (FRC) plasma [Spencer, Tuszewski, and Linford, 1983] are amended from a series of 2D…Abba Alhaji Bala, Ping Zhu, Haolong Li et al.·Apr 17, 2022SaveLearn
Nonlinear study of local ballooning mode near the separatrixSmall edge-localized-mode (ELM), similar to the quasi-continuous exhaust (QCE), has been achieved by increasing the density at the separatrix. Starting from the Type-I ELM experimental data in EAST,…T. F. Tang, X. Q. Xu, K. Li et al.·Apr 17, 2022SaveLearn
Impact of impurities on drift wave instabilities in reversed-field pinch plasmasThe drift wave in the presence of impurity ions was investigated numerically in reversed field pinch (RFP) plasmas, using the gyrokinetic integral eigenmode equation. It was found that in RFP plasmas…Jingchun Li, Songfen Liu, Yilong Zhang et al.·Apr 16, 2022SaveLearn
Two-dimensional plasma density evolution local to the inversion layer during sawtooth crash events using Beam Emission SpectroscopyWe present methods for analyzing Beam Emission Spectroscopy (BES) data to obtain the plasma density evolution associated with rapid sawtooth crash events at the DIII-D tokamak. BES allows coverage…Sayak Bose, William Fox, Dingyun Liu et al.·Apr 16, 2022SaveLearn
Design of an arrangement of cubic magnets for a quasi-axisymmetric stellarator experimentThe usage of permanent magnets to shape the confining magnetic field of a stellarator has the potential to reduce or eliminate the need for non-planar coils. As a proof-of-concept for this idea, we…K. C. Hammond, C. Zhu, K. Corrigan et al.·Apr 15, 2022SaveLearn
On the Ohmic-dominant heating mode of capacitively-coupled plasma inverted by boundary electron emissionElectron emission from the boundary is ubiquitous in capacitively coupled plasma (CCP) and precipitates nonnegligible influences on the discharge properties. Here we present the PIC-MCC simulation of…Shu Zhang, Guang-Yu Sun, Jian Chen et al.·Apr 14, 2022SaveLearn
Observation of breakdown wave mechanism in avalanche ionization produced atmospheric plasma generated by a picosecond CO2 laserUnderstanding the formation and long-timescale evolution of atmospheric plasmas produced by ultrashort, long wavelength IR (LWIR) pulses is an important but partially understood problem. Of…E. Welch, D. Matteo, S. Tochitsky et al.·Apr 14, 2022SaveLearn
Particle Deceleration for Collective QED SignaturesFrequency upshifts have been proposed as a first experimental signature of collective effects in QED cascade generated electron-positron pair plasmas. Since the high effective masses of generated…Alec Griffith, Kenan Qu, Nathaniel J. Fisch·Apr 14, 2022SaveLearn
Core localized alpha-channeling via low frequency Alfven mode generation in reversed shear scenariosA novel channel for fuel ions heating in tokamak core plasma is proposed and analyzed using nonlinear gyrokinetic theory. The channel is achieved via spontaneous decay of reversed shear Alfven…Shizhao Wei, Tao Wang, Liu Chen et al.·Apr 13, 2022SaveLearn
Chaos, complexity, and intermittent turbulence in space plasmasIntermittent turbulence is key for understanding the stochastic nonlinear dynamics of space, astrophysical, and laboratory plasmas. We review the observation and theory of chaos and complexity in…A. C. -L. Chian, F. A. Borotto, T. Hada et al.·Apr 13, 2022SaveLearn
Ponderomotive Forces, Stokes Drift, and Momentum in Acoustic and Electromagnetic WavesWe reveal universal connections between three important phenomena in classical wave physics: (i) the ponderomotive force acting on the medium particles in an oscillatory wavefield, (ii) the Stokes…Konstantin Y. Bliokh, Yury P. Bliokh, Franco Nori·Apr 12, 2022SaveLearn
Effects of plasma on physical properties of water: nanocrystalline-to-amorphous phase transition and improving produce washingRecently is was discovered in various applications that many physical and chemical properties of water change their temperature dependence between about 35 and 60 degrees Celsius. In particular, heat…Jinjie He, Alexander Rabinovich, Dmitri Vainchtein et al.·Apr 12, 2022SaveLearn
The electron foreshock at high-Mach-number nonrelativistic oblique shocksIn the Universe matter outside of stars and compact objects is mostly composed of collisionless plasma. The interaction of a supersonic plasma flow with an obstacle results in collisionless shocks…Artem Bohdan, Martin S. Weidl, Paul J. Morris et al.·Apr 12, 2022SaveLearn
Global gyrokinetic simulations of ASDEX Upgrade up to the transport time-scale with GENE-TangoAn accurate description of turbulence up to the transport time scale is essential for predicting core plasma profiles and enabling reliable calculations for designing advanced scenarios and future…A. Di Siena, A. Banon Navarro, T. Luda et al.·Apr 12, 2022SaveLearn
Investigating the effects of electron bounce-cyclotron resonance on plasma dynamics in capacitive discharges operated in the presence of a weak transverse magnetic fieldRecently, S Patil et al. have reported the existence of an enhanced operating regime when a low-pressure (5 mTorr) capacitively coupled discharge (CCP) is driven by a very high radio-frequency (60…Sarveshwar Sharma, Sanket Patil, Sudip Sengupta et al.·Apr 12, 2022SaveLearn