Experimental Observation of Motion of Ions in a Resonantly Driven Plasma Wakefield AcceleratorWe show experimentally that an effect of motion of ions, observed in a plasma-based accelerator, depends inversely on the plasma ion mass. The effect appears within a single wakefield event and…M. Turner, E. Walter, C. Amoedo et al.·Jun 24, 2024SaveLearn
Will shifted and truncated Maxwellian EVDF near the wall exhibit different electron currents?Experiments to explore the predicted consequences on the I-V characteristics of a Langmuir probe based on the fluid approach for electrons and the electron Bohm criterion are conducted and their…Yegeon Lim, Young-chul Ghim·Jun 24, 2024SaveLearn
Inferring the scrape-off layer heat flux width in a divertor with a low degree of axisymmetryPlasma facing components (PFCs) in the next generation of tokamak devices will operate in challenging environments, with heat loads predicted to exceed 10 MWm-2. The magnitude of these heat…C. Marsden, X. Zhang, M. Moscheni et al.·Jun 24, 2024SaveLearn
Flux-Rope Mediated Turbulent Magnetic ReconnectionWe present a new model of magnetic reconnection in the presence of turbulence, applicable when the magnetic helicity is non-zero. The new model differs from the Lazarian-Vishniac turbulent…Alexander J. B. Russell·Jun 23, 2024SaveLearn
The effect of separatrix density and PFC material on H-mode confinement in the ITPA global H-mode databaseRecent data, added to the ITPA global H-mode database [1] for ASDEX-U [2] and JET-ILW, reveals that the separatrix density nsep has a correlation with the H20 factor (Confinement time relative…M. Kotschenreuther, X. Liu, D. R. Hatch et al.·Jun 21, 2024SaveLearn
Investigating Instabilities in Magnetized Low-pressure Capacitively-Coupled RF Plasma using Particle-in-Cell (PIC) SimulationsThe effect of a uniform magnetic field on particle transport in low-pressure radio frequency (RF) capacitively coupled plasma (CCP) has been studied using a particle-in-cell (PIC) model. Three…Sathya Ganta, Kallol Bera, Shahid Rauf et al.·Jun 21, 2024SaveLearn
Initial imprint effect on dynamic mitigation of plasma instabilityWe proposed a dynamic mitigation method for plasma instabilities based on a phase control to mitigate plasma instabilities and to smooth plasma non-uniformities [e.g. Phys. Plasmas, 19(2012)024503].…Shigeo Kawata·Jun 21, 2024SaveLearn
Barrier discharges in CO2 -- optical emission spectra analysis and E/N determination from intensity ratioWe study barrier discharges in CO2 using optical emission spectroscopy and electrical measurements. We record the spectra of weak CO2 barrier discharge emission in UV-VIS-NIR range. The CO…Tomáš Hoder, David Prokop, Corentin Bajon et al.·Jun 20, 2024SaveLearn
Quasilinear drift kinetic theory of alpha particle transport by neoclassical tearing modesKinetic theory of particles near resonances is a current topic of discussion in plasma physics and astrophysics. We extend this discussion to the kinetic theory of the interaction between alpha…Elizabeth A. Tolman, Peter J. Catto·Jun 19, 2024SaveLearn
Nonlinear modulation of dispersive fast magnetosonic waves in an inhomogeneous rotating solar low-β magnetoplasmaWe study the modulation of fast magnetosonic waves (MSWs) in rotating inhomogeneous low-β magnetoplasmas with the effects of gravitation and the Coriolis force. By employing the standard…J. Turi, A. P. Misra·Jun 19, 2024SaveLearn
Comment on "ENN's roadmap for proton-boron fusion based on spherical torus" [Phys. Plasmas 31, 062507 (2024)]This comment discusses the feasibility of hot ion mode Ti/Te=4 for proton-boron fusion which is critical for the roadmap proposed in Liu, M et al [Phys. Plasmas 31, 062507 (2024)].…Zhi Li·Jun 19, 2024SaveLearn
Development of Volume Produced Negative Ion Source using a CCRF DischargeThis work shows the development of a volume-produced negative ion source that consists of annular parallel plates driven by a 13.56 MHz capacitively coupled radio frequency in a push-pull…Pawandeep Singh, Swati Dahiya, Avnish Pandey et al.·Jun 19, 2024SaveLearn
Sheath effects with thermal electrons on the resonance frequency of a DC-biased hairpin probeThe dielectric constant of a sheath, whether ionic or electronic, formed around the cylindrical limbs of a hairpin probe, is often considered the same as that of a vacuum. However, this assumption…Pawandeep Singh, Avnish Pandey, Swati Dahiya et al.·Jun 19, 2024SaveLearn
Mode Coupling and Breathing Oscillation in Partially Magnetized Cross-Field PlasmasWe report on investigations of mode coupling between rotating spokes during the onset of the breathing oscillation. Demonstrating the existence of nonlinear coupling between the sporadic spokes and…Jong Yoon Park, June Young Kim·Jun 19, 2024SaveLearn
Simulating nonlinear optical processes on a superconducting quantum deviceSimulating plasma physics on quantum computers is difficult because most problems of interest are nonlinear, but quantum computers are not naturally suitable for nonlinear operations. In weakly…Yuan Shi, Bram Evert, Amy F. Brown et al.·Jun 18, 2024SaveLearn
Waveshape of THz radiation produced by two-color laser-induced air plasmasThe spatial and spectral distributions of terahertz (THz) pulses emitted by two-color air plasmas are theoretically investigated for focused laser pulses and in the filamentation regime. We derive a…Alexandre Stathopulos, Stefan Skupin, Binbin Zhou et al.·Jun 18, 2024SaveLearn
First experimental observation of zonal flows in the optimized stellarator Wendelstein 7-XIn this work, we present the first experimental evidence of the presence of zonal flow (ZF) structures in the optimized stellarator Wendelstein 7-X. Using an assortment of diagnostics, flux…D. Carralero, T. Estrada, J. M. García-Regaña et al.·Jun 18, 2024SaveLearn
Turbulent magnetic decay controlled by two conserved quantitiesThe decay of a turbulent magnetic field is slower with helicity than without. Furthermore, the magnetic correlation length grows faster for a helical than a nonhelical field. Both helical and…Axel Brandenburg, Aikya Banerjee·Jun 17, 2024SaveLearn
Anticathode effect on electron kinetics in electron beam generated E × B plasmaElectron beam (e-beam) generated plasmas with applied crossed electric and magnetic (E × B) fields are promising for low damage processing of materials with…Nirbhav Singh Chopra, Ivan Romadanov, Yevgeny Raitses·Jun 17, 2024SaveLearn
Experimental Observation of Space-Charge Field Screening of a Relativistic Particle Bunch in PlasmaThe space-charge field of a relativistic charged bunch propagating in plasma is screened due to the presence of mobile charge carriers. We experimentally investigate such screening by measuring the…L. Verra, M. Galletti, R. Pompili et al.·Jun 17, 2024SaveLearn
Collisional whistler instability and electron temperature staircase in inhomogeneous plasmaHigh-beta magnetized plasmas often exhibit anomalously structured temperature profiles, as seen from galaxy cluster observations and recent experiments. It is well known that when such plasmas are…N. A. Lopez, A. F. A. Bott, A. A. Schekochihin·Jun 16, 2024SaveLearn
Green pathway of Urea Synthesis through Plasma-Ice Interaction Optimization and Mechanistic Insights with N2 + CO2 and NH3 + CO2 Gas MixturesThis study explores a green pathway for urea synthesis using plasma-ice interaction with gas mixtures of N2 + CO2 and NH3 + CO2. Electrical and optical emission spectroscopy were employed to…Vikas Rathore, Vyom Desai, Nirav I. Jamnapara et al.·Jun 16, 2024SaveLearn
Anisotropic Heating and Parallel Heat Flux in Electron-only Magnetic Reconnection with Intense Guide FieldsElectron-only reconnection is a process recently observed in the Earth's magnetosheath, where magnetic reconnection occurs at electron kinetic scales with only electrons involved. Electron-only…Jincai Ren, Giuseppe Arrò, Maria Elena Innocenti et al.·Jun 15, 2024SaveLearn
A Wave-Based Simulation Model for Cross-Beam Energy Transfer and Stimulated Brillouin Scattering in Laser-Plasma SystemsWe present WEBS (WavE-Based Simulations), an efficient wave-based simulation model designed to investigate the dynamic interplay between cross-beam energy transfer (CBET) and stimulated Brillouin…Y. Chen, Qing Wang, H. Wen et al.·Jun 15, 2024SaveLearn
On the stability of the m=1 rigid ballooning mode in a mirror trap with high-beta sloshing ionsStability of the ``rigid'' m = 1 ballooning mode in a mirror axisymmetric trap is studied for the case of oblique neutral beam injection (NBI), which creates an anisotropic population of…Igor Kotelnikov·Jun 15, 2024SaveLearn