Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma acceleratorLaser-driven compact particle accelerators can provide ultrashort pulses of broadband X-rays, well suited for undertaking X-ray absorption spectroscopy measurements on a femtosecond timescale. Here…B. Kettle, C. Colgan, E. Los et al.·May 17, 2023SaveLearn
Evolution of Coupled Weakly-Driven Waves in a Dissipative PlasmaThe nonlinear collisional dynamics of coupled driven plasma waves in the presence of background dissipation is studied analytically within kinetic theory. Sufficiently near marginal stability, phase…N. M. Pham, V. N. Duarte·May 17, 2023SaveLearn
Applicability of the Klein-Gordon equation for pair production in vacuum and plasmaIn this paper, a phase-space description of electron-positron pair-creation will be applied, based on a Wigner transformation of the Klein-Gordon equation. The resulting theory is similar in many…Haidar Al-Naseri, Gert Brodin·May 17, 2023SaveLearn
The Critical Role of Isopotential Surfaces for Magnetostatic Ponderomotive ForcesBy producing localized wave regions at the ends of an open-field-line magnetic confinement system, ponderomotive walls can be used to differentially confine different species in the plasma.…Ian E. Ochs, Nathaniel J. Fisch·May 16, 2023SaveLearn
From Repeatability to Self-Organization of Guided Streamers Propagating in a Jet of Cold PlasmaIn this work, a jet of cold plasma is generated in a device supplied in helium and powered with a high-voltage nanopulse power supply, hence generating guided streamers. We focus on the interaction…H. Decauchy, T. Dufour·May 16, 2023SaveLearn
Transmission and multiple reflection mechanisms of guided streamers propagating through grounded annular electrode and interacting with grounded surface electrodeTrains of positive guided streamers are generated within an atmospheric pressure plasma jet supplied in helium and polarized by a high-voltage nanosecond pulse generator. The device is completed by a…H. Decauchy, T. Dufour·May 16, 2023SaveLearn
On propagation of positive and negative streamers in air in uniform electric fieldsRecently published results of numerical simulations of positive and negative streamers propagating in uniform electric fields in air are analyzed here in the framework of an analytical approach.…G V Naidis, N Yu Babaeva·May 16, 2023SaveLearn
2D electromagnetic simulations of RF heating via inductive coupling in the SPIDER deviceSPIDER is the prototype ion source of MITICA, the full-size neutral beam heating system conceived for the ITER tokamak. It includes eight drivers to heat and sustain the inductively coupled plasma…D. López-Bruna, P. Jain, M. Recchia et al.·May 16, 2023SaveLearn
Non-LTE ionization potential depression model for warm and hot dense plasmaFor warm and hot dense plasma (WHDP), the ionization potential depression (IPD) is a key physical parameter in determining its ionization balance, therefore a reliable and universal IPD model is…Chensheng Wu, Fuyang Zhou, Yong Wu et al.·May 16, 2023SaveLearn
Turbulence with Magnetic Helicity that is Absent on AverageMagnetic helicity plays a tremendously important role when it is different from zero on average. Most notably, it leads to the phenomenon of an inverse cascade. Here, we consider decaying…Axel Brandenburg, Gustav Larsson·May 15, 2023SaveLearn
Spectral-partitioned Kohn-Sham density functional theoryWe introduce a general, variational scheme applied to Kohn-Sham density functional theory that allows for partitioning of the ground-state density matrix into distinct spectral domains, each of which…Babak Sadigh, Daniel Aberg, John Pask·May 15, 2023SaveLearn
Electronic resonances in expanding non-neutral ultracold plasmaWe present a calculation of the natural oscillation spectrum of inhomogeneous non-neutral ultracold plasma. The collective modes of these plasma oscillations are recorded in experiments as absorption…S. Ya. Bronin, S. A. Saakyan, E. V. Vikhrov et al.·May 14, 2023SaveLearn
Magnetic Fields with General OmnigenityOmnigenity is a desirable property of toroidal magnetic fields that ensures confinement of trapped particles. Confining charged particles is a basic requirement for any fusion power plant design, but…Daniel W. Dudt, Alan G. Goodman, Rory Conlin et al.·May 14, 2023SaveLearn
3D modeling of positive streamers in air with inhomogeneous densityWe study the effect of an inhomogeneous gas density on positive streamer discharges in air using a 3D fluid model with stochastic photoionization, generalizing earlier work with a 2D axisymmetric…Baohong Guo, Ute Ebert, Jannis Teunissen·May 12, 2023SaveLearn
Elevating zero dimensional global scaling predictions to self-consistent theory-based simulationsWe have developed an innovative workflow, STEP-0D, within the OMFIT integrated modelling framework. Through systematic validation against the International Tokamak Physics Activity (ITPA) global…Tim Slendebroek, Joseph McClenaghan, Orso Meneghini et al.·May 12, 2023SaveLearn
Flexible, integrated modeling of tokamak stability, transport, equilibrium, and pedestal physicsThe STEP (Stability, Transport, Equilibrium, and Pedestal) integrated-modeling tool has been developed in OMFIT to predict stable, tokamak equilibria self-consistently with core-transport and…B. C. Lyons, J. McClenaghan, T. Slendebroek et al.·May 12, 2023SaveLearn
An implicit, conservative electrostatic particle-in-cell algorithm for paraxial magnetic nozzlesAn electrostatic, implicit particle-in-cell (PIC) model for collisionless, fully magnetized, paraxial plasma expansions in a magnetic nozzle is introduced with exact charge, energy, and magnetic…Pedro Jimenez, Luis Chacon, Mario Merino·May 11, 2023SaveLearn
Suppressing stimulated Raman side-scattering by vector lightRecently, the verification of stimulated Raman side-scattering (SRSS) in different laser inertial confinement fusion ignition schemes poses an underlying risk of SRSS on ignition. In this paper, we…Xiaobao Jia, Qing Jia, Rui Yan et al.·May 11, 2023SaveLearn
Diagnosis of Fast Electron Transport by Coherent Transition RadiationTransport of fast electron in overdense plasmas is of key importance in high energy density physics. However, it is challenging to diagnose the fast electron transport in experiments. In this…Yangchun Liu, Xiaochuan Ning, Dong Wu et al.·May 11, 2023SaveLearn
Far-field model of two-color laser driven terahertz radiation including field element interference and plasma responseThe two-color laser field scheme for broad-band terahertz (THz) radiation from air has been intensively and broadly investigated due to the simplicity in technology and relative high yield…Nan Li, Wei-Min Wang·May 11, 2023SaveLearn
Towards continuum gyrokinetic study of high-field mirrorsHigh-temperature superconducting (HTS) magnetic mirrors under development exploit strong fields with high mirror ratio to compress loss cones and enhance confinement, and may offer cheaper, more…Manaure Francisquez, Maxwell H. Rosen, Noah R. Mandell et al.·May 10, 2023SaveLearn
Enhancement of Fusion Reactivity under Non-Maxwellian Distributions: Effects of Drift-Ring-Beam, Slowing-Down, and Kappa Super-Thermal DistributionsNon-Maxwellian distributions of particles are commonly observed in fusion studies, especially for magnetic confinement fusion plasmas. The particle distribution has a direct effect on fusion…Haozhe Kong, Huasheng Xie, Bing Liu et al.·May 10, 2023SaveLearn
Steady regime of radiation pressure acceleration with foil thickness adjustable within micrometers under 10-100 PW laserQuasi-monoenergetic GeV-scale protons are predicted to efficiently generate via radiation pressure acceleration (RPA) when the foil thickness is matched with the laser intensity, e.g., Lmat at…Meng Liu, Wei-Min Wang, Yu-Tong Li·May 10, 2023SaveLearn
Efficient ion acceleration driven by a Laguerre Gaussian laser in near-critical-density plasmaLaser-driven ion accelerators have the advantages of compact size, high density, and short bunch duration over conventional accelerators. Nevertheless, it is still challenging to generate ion beams…Jia-Xiang Gao, Meng Liu, Wei-Min Wang·May 10, 2023SaveLearn
Experimental mitigation of fast magnetic reconnection in multiple interacting laser-produced plasmasThe meeting of astrophysical plasmas and their magnetic fields creates many reconnection sites. We experimentally compare the reconnection rate of laser-driven magnetic reconnection when it takes…S. Bolaños, R. Smets, C. Courtois et al.·May 9, 2023SaveLearn