Accurate phase diagrams of multicomponent plasmas are required for the modeling of dense stellar plasmas, such as those found in the cores of white dwarf stars and the crusts of neutron stars. Those phase diagrams have been computed using a variety of standard techniques, which suffer from physical ...

[Phys. Rev. E 103, 043204] Published Thu Apr 15, 2021

]]>Outer crusts of neutron stars and interiors of cool white dwarfs consist of bare atomic nuclei, arranged in a crystal lattice and immersed in a Fermi gas of degenerate electrons. We study electrostatic properties of such Coulomb crystals, taking into account the polarizability of the electron gas an...

[Phys. Rev. E 103, 043205] Published Thu Apr 15, 2021

]]>Magnetohydrodynamic (MHD) turbulence affects both terrestrial and astrophysical plasmas. The properties of magnetized turbulence must be better understood to more accurately characterize these systems. This work presents ideal MHD simulations of the compressible Taylor-Green vortex under a range of ...

[Phys. Rev. E 103, 043203] Published Tue Apr 13, 2021

]]>The Hartree-Fock equations for many-electron atoms embedded in a plasma medium are solved using two different plasma models: (a) Debye-Hückel screening (DHS) potential and (b) exponential cosine screened Coulomb (ECSC) potential. Roothaan's approach is implemented for these models after solving the ...

[Phys. Rev. E 103, 043202] Published Fri Apr 09, 2021

]]>Intense laser-plasma interactions are an essential tool for the laboratory study of ion acceleration at a collisionless shock. With two-dimensional particle-in-cell calculations of a multicomponent plasma we observe two electrostatic collisionless shocks at two distinct longitudinal positions when d...

[Phys. Rev. E 103, 043201] Published Mon Apr 05, 2021

]]>Classical plasma are typically of low density and/or high temperature. Two of its basic properties are Landau damping and two-stream instabilities. When increasing the plasma density, quantum effects appear and beam-plasma interactions show behavior different from the classical cases. We revisit Lan...

[Phys. Rev. E 103, 033207] Published Mon Mar 29, 2021

]]>In hot dense plasmas of intermediate or high-$Z$ elements in the state of local thermodynamic equilibrium, the number of electronic configurations contributing to key macroscopic quantities such as the spectral opacity and equation of state can be enormous. In this work we present systematic methods f...

[Phys. Rev. E 103, 033206] Published Fri Mar 26, 2021

]]>For a semibounded plasma in a constant magnetic field and interacting with short laser pulse, a kinetic equation is derived, which makes it possible to describe the low-frequency movements of electrons. In the linear approximation in laser radiation intensity the solution of kinetic equation is obta...

[Phys. Rev. E 103, 033205] Published Wed Mar 24, 2021

]]>A numerical model for laser-matter interactions in the warm dense matter regime is presented with broad applications, e.g., ablation, thermionic emission, and radiation. A unique approach is adopted, in which a complete set of collisional and transport data is calculated using a quantum model and in...

[Phys. Rev. E 103, 033204] Published Tue Mar 23, 2021

]]>The generation of hot, directional electrons via laser-driven stimulated Raman scattering (SRS) is a topic of great importance in inertial confinement fusion (ICF) schemes. Little recent research has been dedicated to this process at high laser intensity, in which back, side, and forward scatter sim...

[Phys. Rev. E 103, 033203] Published Thu Mar 18, 2021

]]>We present a free-energy density functional theory (DFT)-based methodology for optical property calculations of warm dense matter to cover a wide range of thermodynamic conditions and photon energies including the entire x-ray range. It uses Mermin-Kohn-Sham density functional theory with exchange-c...

[Phys. Rev. E 103, 033202] Published Mon Mar 08, 2021

]]>Achieving a high conversion efficiency into relativistic electrons is central to short-pulse laser application and fundamentally relies on creating interaction regions with intensities $\gg {10}^{18}\phantom{\rule{0.28em}{0ex}}\mathrm{W}/{\mathrm{cm}}^{2}$. Small focal length optics are typically employed to achieve this goal; however, this solution is imprac...

[Phys. Rev. E 103, L031201] Published Tue Mar 02, 2021

]]>We report on the experimental investigation of magnetic field generation with a half-loop gold sheet coil driven by long-duration (10 ns) and high-power (0.5 TW) laser pulses. The amplitude of the magnetic field was characterized experimentally using proton deflectometry. The field rises rapidly in ...

[Phys. Rev. E 103, 033201] Published Mon Mar 01, 2021

]]>The formation and structure of a collisional shock wave in a fully ionized plasma is studied via full particle-in-cell simulations, which allows the complex momentum and energy transfer processes between different charged particles to be treated self-consistently. The kinetic energy of the plasma fl...

[Phys. Rev. E 103, 023213] Published Wed Feb 24, 2021

]]>While the majority of fusion energy research is focused on magnetic confinement, there have been several alternative confinement methods aimed at the development of smaller and less expensive reactors. A number of these alternative reactors are based on a spherically convergent beam of recirculating...

[Phys. Rev. E 103, 023212] Published Mon Feb 22, 2021

]]>Fast transient growth of hydrodynamic perturbations due to nonmodal effects is shown to be possible in an ablation flow relevant to inertial confinement fusion (ICF). Likely to arise in capsule ablators with material inhomogeneities, such growths appear to be too fast to be detected by existing meas...

[Phys. Rev. E 103, 023211] Published Fri Feb 19, 2021

]]>A 1-mm-size cluster composed of 10 dust particles immersed in plasma is rotated by the torque of a pulsed electron beam with energy in the range 8–12 keV. The dust particles are electrically charged spheres with radius 5.9 $\mu \mathrm{m}$ and are levitated in the plasma sheath, forming a round, planar, Coulomb-c...

[Phys. Rev. E 103, 023210] Published Wed Feb 17, 2021

]]>The dynamics of an argon plasma in the gap of a thermionic diode is investigated using particle-in-cell (PIC) simulations. The time-averaged diode current, as a function of the relative electrical potential between the electrodes, is studied while the plasma density depletes due to recombination on ...

[Phys. Rev. E 103, 023207] Published Mon Feb 15, 2021

]]>Dynamics of the transition from a linear plasma wave to a nonlinear state characterized by the Bernstein-Greene-Kruskal mode is studied within the framework of the Vlasov-Poisson system. In the linear stage, the plasma distribution function ($f$) develops finer and finer structures in velocity space t...

[Phys. Rev. E 103, 023208] Published Mon Feb 15, 2021

]]>A high energy density plasma embedded in a neutral gas is able to launch an outward-propagating nonlinear electrostatic ionization wave that traps energetic electrons. The trapping maintains a strong sheath electric field, enabling rapid and long-lasting wave propagation aided by field ionization. U...

[Phys. Rev. E 103, 023209] Published Mon Feb 15, 2021

]]>We propose to use ultrahigh intensity laser pulses with wave-front rotation (WFR) to produce short, ultraintense surface plasma waves (SPW) on grating targets for electron acceleration. Combining a smart grating design with optimal WFR conditions identified through simple analytical modeling and par...

[Phys. Rev. E 103, L021201] Published Mon Feb 15, 2021

]]>The combined effects of external electric, magnetic, and Aharonov-Bohm (AB) flux fields on the two-dimensional hydrogen atom embedded in both Debye and quantum plasmas modeled by the more general exponential cosine Coulomb (MGECSC) potential are investigated using the general analytic approach, name...

[Phys. Rev. E 103, 023206] Published Thu Feb 11, 2021

]]>The transport properties of the weakly nonlinear (WNL) two-dimensional (2D) quasilongitudinal dust lattice mode is studied in an experimentally realized highly viscous, strongly coupled, weakly ionized plasma [V. E. Fortov *et al.*, Phys. Rev. Lett. **109**, 055002 (2012)]. The WNL dynamics is found to b...

[Phys. Rev. E 103, 023205] Published Tue Feb 09, 2021

]]>It is shown theoretically and by simulation that a Gaussian laser beam of relativistic intensity interacting with a uniform-thickness plasma slab of azimuthally varying density can acquire orbital angular momentum (OAM). During the interaction, the laser ponderomotive force and the charge-separation...

[Phys. Rev. E 103, 023204] Published Mon Feb 08, 2021

]]>The advent of x-ray free-electron lasers (XFELs), which provide intense ultrashort x-ray pulses, has brought a new way of creating and analyzing hot and warm dense plasmas in the laboratory. Because of the ultrashort pulse duration, the XFEL-produced plasma will be out of equilibrium at the beginnin...

[Phys. Rev. E 103, 023203] Published Fri Feb 05, 2021

]]>High-resolution single-shot nonrelativistic ultrafast electron microscopy (UEM) relies on adaptive optics to compress high-intensity bunches using radio frequency (RF) cavities. We present a comprehensive discussion of the analytic approaches available to characterize bunch dynamics as an electron b...

[Phys. Rev. E 103, 023202] Published Thu Feb 04, 2021

]]>In deuterium-tritium cryogenic implosions, hot-spot x-ray self-emission is observed to begin at a larger shell radius than is predicted by a one-dimensional radiation-hydrodynamic implosion model. Laser-imprint is shown to explain the observation for a low-adiabat implosion. For more-stable implosio...

[Phys. Rev. E 103, 023201] Published Mon Feb 01, 2021

]]>Time-resolved tunable laser absorption spectroscopy is used to characterize the physical properties of ultrafast laser-produced plasmas. The plasmas were produced from an Inconel target, with $\le 0.4\phantom{\rule{0.16em}{0ex}}\mathrm{wt}\phantom{\rule{0.16em}{0ex}}\%$ Al, using $\sim 35\phantom{\rule{0.16em}{0ex}}\mathrm{fs}$, $\sim 800\phantom{\rule{0.16em}{0ex}}\mathrm{nm}$, $\sim 5\phantom{\rule{0.16em}{0ex}}\mathrm{mJ}$ laser pulses at varying Ar background pressures from 1 to 100 Torr. Th...

[Phys. Rev. E 103, 013213] Published Thu Jan 28, 2021

]]>Langevin dynamical simulations of shear-induced melting two-dimensional (2D) dusty plasmas are performed to study the determination of the shear viscosity of this system. It is found that the viscosity calculated from the Green-Kubo relation, after removing the drift motion, well agrees with the vis...

[Phys. Rev. E 103, 013211] Published Mon Jan 25, 2021

]]>By adopting the hybrid coordinates, in which the nonlinearity of polarization displacement is included in the configuration space variables compared to the conventional gyrocenter coordinates, the polarization effects are analyzed by using the modern gyrokinetic (GK) theory of magnetized plasmas. Ba...

[Phys. Rev. E 103, 013212] Published Mon Jan 25, 2021

]]>We present a finite-temperature density-functional-theory investigation of the nonequilibrium transient electronic structure of warm dense Li, Al, Cu, and Au created by laser excitation. Photons excite electrons either from the inner shell orbitals or from the valence bands according to the photon e...

[Phys. Rev. E 103, 013210] Published Fri Jan 22, 2021

]]>A class of topological magnetic island bifurcations that has not previously been observed in toroidal plasmas is described. Increasing an externally applied three-dimensional magnetic field in resistive magnetohydrodynamic simulations results in the asymmetric elongation of resonant island flux surf...

[Phys. Rev. E 103, 013209] Published Tue Jan 19, 2021

]]>Two-temperature rotational energy distributions from rarefied diatomic molecules are very often observed in laboratory plasmas. There has been much debate over the years about the physical meaning of this kind of rotational energy distributions and the associated statistical physics. We show here th...

[Phys. Rev. E 103, 013208] Published Thu Jan 14, 2021

]]>The laser interaction with an electron-positron-ion mixed plasma is studied from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma which is assumed with a sharp plasma-vacuum interface and uniform density distribution, when it is irradiated by a weakly r...

[Phys. Rev. E 103, 013206] Published Mon Jan 11, 2021

]]>A vibrational model of heat transfer in simple liquids with soft pairwise interatomic interactions is discussed. A general expression is derived, which involves an averaging over the liquid collective mode excitation spectrum. The model is applied to quantify heat transfer in a dense Lennard-Jones l...

[Phys. Rev. E 103, 013207] Published Mon Jan 11, 2021

]]>This paper proposes a model of the laser-driven electron acceleration that occurs when a high-intensity laser interacts with a nanoplate target. It shows that quasistatic electric ${\mathbf{E}}_{\mathrm{qs}}$ and magnetic ${\mathbf{B}}_{\mathrm{qs}}$ fields can be formed when the laser, polarized normal to the nanoplates, extracts electrons from th...

[Phys. Rev. E 103, 013204] Published Fri Jan 08, 2021

]]>The penetration of a supersonic particle at the interface is studied in a binary complex plasma. Inspired by the experiments performed in the PK-3 Plus Laboratory on board the International Space Station, Langevin dynamics simulations were carried out. A Mach cone structure forms in the lateral wave...

[Phys. Rev. E 103, 013205] Published Fri Jan 08, 2021

]]>The head-on collision of compressional shocks in two-dimensional dusty plasmas is investigated using both molecular dynamical and Langevin simulations. Two compressional shocks are generated from the inward compressional boundaries in simulations. It is found that, during the collision of shocks, th...

[Phys. Rev. E 103, 013202] Published Thu Jan 07, 2021

]]>We put together a first-principles equation of state (FPEOS) database for matter at extreme conditions by combining results from path integral Monte Carlo and density functional molecular dynamics simulations of the elements H, He, B, C, N, O, Ne, Na, Mg, Al, and Si as well as the compounds $\mathrm{LiF},{\mathrm{B}}_{4}\mathrm{C}...$

[Phys. Rev. E 103, 013203] Published Thu Jan 07, 2021

]]>Pinned solitons are a special class of nonlinear solutions created by a supersonically moving object in a fluid. They move with the same velocity as the moving object and thereby remain pinned to the object. A well-known hydrodynamical phenomenon, they have been shown to exist in numerical simulatio...

[Phys. Rev. E 103, 013201] Published Tue Jan 05, 2021

]]>Ion attachment and ion drag to dust particles near the edge of a nonthermal plasma sheath are of interest to better understand how particles become trapped in such sheath regions. While electron-particle collisions in plasmas and sheaths can often be described by orbital motion limited theory, quant...

[Phys. Rev. E 102, 063212] Published Thu Dec 31, 2020

]]>Fast shocks that form in optically thick media are mediated by Compton scattering and, if relativistic, pair creation. Since the radiation force acts primarily on electrons and positrons, the question arises of how the force is mediated to the ions which are the dominant carriers of the shock energy...

[Phys. Rev. E 102, 063210] Published Wed Dec 23, 2020

]]>A laser plasma wake field in a single-color femtosecond laser filament determines the acceleration of ionized electrons, which affects the intensity and bandwidth of the emitted terahertz wave and is important for understanding the fundamental nonlinear process of THz generation. Since the THz wave ...

[Phys. Rev. E 102, 063211] Published Wed Dec 23, 2020

]]>When a plasma is unstable, how large is the energy release that can be triggered by the instability? In this paper, the authors show that two existing approaches to this question are equivalent, and provide a prescription for calculating the maximum energy that can be extracted.

[Phys. Rev. E 102, 063209] Published Mon Dec 21, 2020

]]>Exact four-photon resonance of collinear planar laser pulses is known to be prohibited by the classical dispersion law of electromagnetic waves in plasma. We show here that the renormalization produced by an arbitrarily small relativistic electron nonlinearity removes this prohibition. The laser fre...

[Phys. Rev. E 102, 063207] Published Thu Dec 17, 2020

]]>*K*-shell x-ray spectra from Al wire hybrid *X* pinches have been studied using an x-ray streak camera with better than 0.1-ns time resolution together with a Focusing Spectrograph with Spatial Resolution (FSSR) spectrograph. High-intensity radiation with a continuumlike spectrum was observed in the sub...

[Phys. Rev. E 102, 063208] Published Thu Dec 17, 2020

]]>We propose a mechanism to generate a single intense circularly polarized attosecond x-ray pulse from the interaction of a circularly polarized relativistic few-cycle laser pulse with an ultrathin foil at normal incidence. Analytical modeling and particle-in-cell simulation demonstrate that a huge ch...

[Phys. Rev. E 102, 061201(R)] Published Tue Dec 15, 2020

]]>We numerically study interaction of a very intense ($I\sim {10}^{17}$ to $5\times {10}^{19}\phantom{\rule{0.16em}{0ex}}\mathrm{W}/{\mathrm{cm}}^{2}$) femtosecond obliquely incident $p$-polarized laser pulse with a steep-gradient ($L\sim \lambda $) plasma, i.e., within the conditions typical for modern experiments. It is shown that the hybrid stimulated Raman scattering–two-plasmon decay ...

[Phys. Rev. E 102, 063206] Published Mon Dec 14, 2020

]]>The kinetic analyses are quite important when it comes to understanding the particle behavior in any device as they start to deviate from a continuum nature. In the present study, kinetic simulations are performed using the particle-in-cell method to analyze the behavior of ions inside a cylindrical...

[Phys. Rev. E 102, 063205] Published Thu Dec 10, 2020

]]>Langevin dynamical simulations are performed to study the depinning dynamics of two-dimensional dusty plasmas on a one-dimensional periodic substrate. From the diagnostics of the sixfold coordinated particles ${P}_{6}$ and the collective drift velocity ${V}_{x}$, three different states appear, which are the pinni...

[Phys. Rev. E 102, 063203] Published Tue Dec 08, 2020

]]>One of the most successful ways to model the multitude of electron and photon processes in plasmas is the approach used in collisional radiative (CR) codes. The accuracy of CR codes depends largely on the accuracy of the rates of each process. These rates are generally well approximated in hot, clas...

[Phys. Rev. E 102, 063204] Published Tue Dec 08, 2020

]]>The viscosity tensor of the magnetized one-component plasma, consisting of five independent shear viscosity coefficients, a bulk viscosity coefficient, and a cross coefficient, is computed using equilibrium molecular dynamics simulations and the Green-Kubo relations. A broad range of Coulomb couplin...

[Phys. Rev. E 102, 063202] Published Thu Dec 03, 2020

]]>In two-dimensional turbulent systems the redistribution of energy can be described by quadratic nonlinear three-wave interactions, which are limited by resonance conditions. The set of coupling modes can be understood as resonant manifold. It has been predicted by theory that, in the presence of a s...

[Phys. Rev. E 102, 063201] Published Wed Dec 02, 2020

]]>The dynamic structure factor and other dynamic characteristics of strongly coupled one-component plasmas have been studied [Yu. V. Arkhipov *et al.*, Phys. Rev. Lett. **119**, 045001 (2017)] using the self-consistent version of the method of moments. Within any version of the latter, the system dielectri...

[Phys. Rev. E 102, 053215] Published Mon Nov 30, 2020

]]>Using an analytical model and computer simulation, we show that the wakefield driven by an ultrashort laser pulse in high-density plasma periodically reverses its polarity due to the carrier-envelope phase shift of the driver. The wakefield polarity reversal occurs on spatial scales shorter than the...

[Phys. Rev. E 102, 053216] Published Mon Nov 30, 2020

]]>Propagation features of circularly polarized (CP) electromagnetic waves in magnetized plasmas are determined by the plasma density and the magnetic field strength. This property can be applied to design a unique plasma photonic device for intense short-pulse lasers. We have demonstrated by numerical...

[Phys. Rev. E 102, 053214] Published Tue Nov 24, 2020

]]>When initially isotropic three-dimensional (3D) turbulence is compressed along two dimensions, the compression supplies energy directly to the flow components in the compressed directions, while the flow component in the noncompressed direction experiences the effects of compression only indirectly ...

[Phys. Rev. E 102, 053213] Published Mon Nov 23, 2020

]]>We propose a scheme to overcome the great challenge of polarization loss in spin-polarized ion acceleration. When a petawatt laser pulse penetrates through a compound plasma target consisting of a double layer slab and prepolarized hydrogen halide gas, a strong forward moving quasistatic longitudina...

[Phys. Rev. E 102, 053212] Published Fri Nov 20, 2020

]]>Experiments on the National Ignition Facility (NIF) to study hohlraums lined with a 20-mg/cc $400\text{\u2212}\mu \mathrm{m}$-thick ${\mathrm{Ta}}_{2}{\mathrm{O}}_{5}$ aerogel at full scale (hohlraum diameter = 6.72 mm) are reported. Driven with a 1.6-MJ, 450-TW laser pulse, the performance of the foam liner is diagnosed using implosion hot-spot symmetry...

[Phys. Rev. E 102, 051201(R)] Published Thu Nov 19, 2020

]]>The gyrotropic properties of a rotating magnetized plasma are derived analytically. Mechanical rotation leads to a new cutoff for wave propagation along the magnetic field, and polarization rotation above this cutoff is the sum of the classical magneto-optical Faraday effect and the mechanico-optica...

[Phys. Rev. E 102, 051202(R)] Published Thu Nov 19, 2020

]]>Collisional radiative (CR) models based on *ab initio* atomic structure calculation have been utilized over 20 years to analyze many-electron atomic and ionic spectra. Although the population distribution of the excited states in plasmas and their emission spectra are computed using CR models, systema...

[Phys. Rev. E 102, 053211] Published Thu Nov 19, 2020

]]>High-energy-density (HED) experiments in convergent geometry are able to test physical models at pressures beyond hundreds of millions of atmospheres. The measurements from these experiments are generally highly integrated and require unique analysis techniques to procure quantitative information. T...

[Phys. Rev. E 102, 053210] Published Wed Nov 18, 2020

]]>The authors study the electrical conductivity of aluminum through a range of temperatures from the solid to the plasma state, including the warm dense matter regime. They propose a consistent approach to remove elastic contributions from the structure factor of the system, and the results compare well with previously published experimental and simulation data.

[Phys. Rev. E 102, 053209] Published Mon Nov 16, 2020

]]>We studied the dynamics of solvated electrons in the early stage of plasma generation in water induced with an intense femtosecond laser pulse. According to the decay kinetics of solvated electrons, a fast recombination process of solvated electrons (geminate recombination) occurred with a more prol...

[Phys. Rev. E 102, 053207] Published Thu Nov 12, 2020

]]>The motion of a charged particle in a magnetic field can be modeled as a persistent random walk subject to elastic collisions. When compared with experiments and simulations, this model explains certain transient nondiffusive properties that are seen in plasma experiments.

[Phys. Rev. E 102, 053206] Published Wed Nov 04, 2020

]]>Boron carbide (${\mathrm{B}}_{4}\mathrm{C}$) is of both fundamental scientific and practical interest due to its structural complexity and how it changes upon compression, as well as its many industrial uses and potential for use in inertial confinement fusion (ICF) and high-energy density physics experiments. We report the...

[Phys. Rev. E 102, 053203] Published Tue Nov 03, 2020

]]>Betatron radiation generated by relativistic electrons during their wiggling motion in an ion channel is a well-studied source of x-ray photons. Due to the highly collimated emission such compact laser-driven sources have attracted significant attention in various laser or plasma-based applications,...

[Phys. Rev. E 102, 053205] Published Tue Nov 03, 2020

]]>We demonstrate through experiments and numerical simulations that low-density, low-loss, meter-scale plasma channels can be generated by employing a conditioning laser pulse to ionize the neutral gas collar surrounding a hydrodynamic optical-field-ionized (HOFI) plasma channel. We use particle-in-ce...

[Phys. Rev. E 102, 053201] Published Mon Nov 02, 2020

]]>Relativistic flying forcibly oscillating reflective diffraction gratings are formed by an intense laser pulse (driver) in plasma. The mirror surface is an electron density singularity near the joining area of the wake wave cavity and the bow wave; it moves together with the driver laser pulse and un...

[Phys. Rev. E 102, 053202] Published Mon Nov 02, 2020

]]>It is shown by multidimensional particle-in-cell simulations that intense secondary whistler waves with special vortexlike field topology can be excited by a relativistic laser pulse in the highly magnetized, near-critical density plasma. Such whistler waves with lower frequencies obliquely propagat...

[Phys. Rev. E 102, 053204] Published Mon Nov 02, 2020

]]>Dusty plasma experiments can be performed quite easily in a strong coupling regime. In our previous work [V. S. Dharodi, S. K. Tiwari, and A. Das, Physics of Plasmas **21**, 073705 (2014)], we numerically explored such plasmas with constant density and observed the transverse shear (TS) waves from the r...

[Phys. Rev. E 102, 043216] Published Wed Oct 28, 2020

]]>The transport properties of warm dense neon (Ne) and krypton (Kr) are studied by combining self-consistent fluid variational theory (SFVT) with linear response theory (LRT). The components are determined using the SFVT, and the transport parameters, including the electrical conductivity, thermal con...

[Phys. Rev. E 102, 043214] Published Mon Oct 26, 2020

]]>Spin-polarized fuels are promising for inertial confinement fusion due to the enhanced fusion cross section. One significant concern of spin-polarized inertial confinement fusion is whether the nuclei polarization could survive in the implosions and contribute to ignitions. Here we present numerical...

[Phys. Rev. E 102, 043215] Published Mon Oct 26, 2020

]]>In this work, we present results from experiments capable of producing and measuring the propagation of multiple successive, copropagating shocks across an unstable planar interface, where the shocks are independently driven and separately controllable, enabling the study of this important phenomeno...

[Phys. Rev. E 102, 043212] Published Fri Oct 23, 2020

]]>Ground-state structures of a two-dimensional (2D) system composed of superparamagnetic charged particles are investigated by means of molecular dynamics simulation. The charged particles trapped in a quadratic potential interact with each other via the repulsive, attractive, and magnetic dipole-dipo...

[Phys. Rev. E 102, 043213] Published Fri Oct 23, 2020

]]>Dense plasmas occur in stars, giant planets, and in inertial fusion experiments. Accurate modeling of the electronic structure of these plasmas allows for prediction of material properties that can in turn be used to simulate these astrophysical objects and terrestrial experiments. But modeling them...

[Phys. Rev. E 102, 043211] Published Mon Oct 19, 2020

]]>Complex plasmas are interesting systems as the charged dust can self-assemble into different types of ordered structures. To understand the mechanisms which govern the transitions from one type of structure to another, it is necessary to know both the dust charge and the confining electric fields wi...

[Phys. Rev. E 102, 043210] Published Fri Oct 16, 2020

]]>Cross sections for photo-induced bound-free and free-free transitions in plasmas are evaluated in the average-atom approximation and applied to determine opacities of dense plasmas of light elements. Parameters characterizing the plasmas (chemical potential, average ionic charge, free electron densi...

[Phys. Rev. E 102, 043209] Published Wed Oct 14, 2020

]]>A planar laser pulse propagating in vacuum can exhibit an extremely large ponderomotive force. This force, however, cannot impart net energy to an electron: As the pulse overtakes the electron, the initial impulse from its rising edge is completely undone by an equal and opposite impulse from its tr...

[Phys. Rev. E 102, 043207] Published Tue Oct 13, 2020

]]>The aim of this paper is to investigate the effects of a rotating ion beam on the temperature gradient instability (TGI) in completely ionized plasmas. The interplay of the temperature and density gradients provides the basis for experiencing an unstable inhomogeneous plasma medium due to TGI taken ...

[Phys. Rev. E 102, 043208] Published Tue Oct 13, 2020

]]>The equilibrium structure and the dispersion relations of collective excitations in trilayer Yukawa systems in the strongly coupled liquid regime are examined. The equilibrium correlations reveal a variety of structures in the liquid phase, reminiscent of the corresponding structures in the solid ph...

[Phys. Rev. E 102, 043206] Published Fri Oct 09, 2020

]]>Laboratory realizations of two-dimensional (2D) plasma crystals typically involve monodisperse microparticles confined into horizontal monolayers in radio-frequency (rf) plasma sheaths. This gives rise to the so-called plasma wakes beneath the microparticles. The presence of wakes renders the intera...

[Phys. Rev. E 102, 043204] Published Wed Oct 07, 2020

]]>In this article we report acceleration observed for the ions produced in a 50-nm-thick nickel film coated on a quartz substrate, under nanosecond laser ablation, in the rear ablation geometry. A detailed study with varying background pressure and laser energy is done. Spectroscopic study including s...

[Phys. Rev. E 102, 043205] Published Wed Oct 07, 2020

]]>A charged particle moving through a plasma experiences a friction force that commonly acts antiparallel to its velocity. It was recently predicted that in strongly magnetized plasmas, in which the plasma particle gyrofrequency exceeds the plasma frequency, the friction also includes a transverse com...

[Phys. Rev. E 102, 041201(R)] Published Tue Oct 06, 2020

]]>When the Zeeman energy approaches the characteristic kinetic energy of electrons, Landau quantization becomes important. In the vicinity of magnetars, the Zeeman energy can even be relativistic. We start from the Dirac equation and derive a kinetic equation for electrons, focusing on the phenomenon ...

[Phys. Rev. E 102, 043203] Published Tue Oct 06, 2020

]]>This work investigates the time-dependent physics of multipactor discharge on a single dielectric surface with a transverse rf electric field of two carrier frequencies using a multiparticle Monte Carlo simulation model with adaptive time steps. The effects of the relative strength and phase, and th...

[Phys. Rev. E 102, 043201] Published Fri Oct 02, 2020

]]>This paper is devoted to the problem of obtaining high-intense circularly polarized terahertz radiation in a nonequilibrium xenon plasma channel in the presence of an external static magnetic field. The physical mechanism is based on the well-known cyclotron resonance effect which enables to provide...

[Phys. Rev. E 102, 043202] Published Fri Oct 02, 2020

]]>For a radiating charged particle, the radiation reaction force plays an important role in determining its motion. Several formulas have been proposed to describe the radiation reaction force. Stationary solutions of the Lorentz-Abraham-Dirac (LAD), Mo-Papas, Landau-Lifshitz, and Ford-O'Connell equat...

[Phys. Rev. E 102, 033210] Published Wed Sep 30, 2020

]]>The electrohydrodynamic response of a counterflow laminar diffusion flame to applied alternating current (ac) electric fields is investigated experimentally and numerically. The flame positions are observed to show typical response to applied ac electric fields with high and moderate frequencies. Th...

[Phys. Rev. E 102, 033209] Published Thu Sep 24, 2020

]]>We present, using three-dimensional particle-in-cell simulations, an observation that orbital angular momentum (OAM) is transferred to resonant electrons proportionally to longitudinal momentum when Laguerre-Gaussian plasma waves are subjected to Landau damping. A higher azimuthal mode number leads ...

[Phys. Rev. E 102, 033208] Published Wed Sep 23, 2020

]]>In this paper we compare different theoretical approaches to describe the dispersion of collective modes in Yukawa fluids when the interparticle coupling is relatively weak, so that the kinetic and potential contributions to the dispersion relation compete with each other. A thorough comparison with...

[Phys. Rev. E 102, 033207] Published Mon Sep 21, 2020

]]>We present a complete theory of the scattering of a particle in a Yukawa potential when the screening length is much larger than the classical impact parameter for ${90}^{\circ}$ deflection and than the de Broglie length. The classical limit, the quantum limit, and the intermediate case are investigated, enabl...

[Phys. Rev. E 102, 033206] Published Thu Sep 17, 2020

]]>This paper reports on the molecular dynamics simulations of classical two-dimensional (2D) electric dipole systems. The properties of 2D systems with bare (nonscreened) and screened dipole-dipole interactions have been investigated. Based on the polygon construction method, we present simulation res...

[Phys. Rev. E 102, 033205] Published Wed Sep 16, 2020

]]>The resources needed for particle-in-cell simulations of laser wakefield acceleration can be greatly reduced in many cases of interest using an envelope model. However, the inclusion of tunneling ionization in this time-averaged treatment of laser-plasma acceleration is not straightforward, since th...

[Phys. Rev. E 102, 033204] Published Mon Sep 14, 2020

]]>This Rapid Communication reports on the observation of an interesting phenomenon: the shape, especially the length, of a microwave plasma jet (MPJ) can be clearly influenced by simply placing a conductor near the plasma source, particularly when the nearby conductor is in contact with the external c...

[Phys. Rev. E 102, 031201(R)] Published Tue Sep 08, 2020

]]>Magnetic reconnection in a relativistic electron magnetization regime was observed in a laboratory plasma produced by a high-intensity, large energy, picoseconds laser pulse. Magnetic reconnection conditions realized with a laser-driven several kilotesla magnetic field is comparable to that in the a...

[Phys. Rev. E 102, 033202] Published Thu Sep 03, 2020

]]>In this paper we study thermodynamic properties of uniform electron gas (UEG) over wide density and temperature range, using the improved fermionic-path-integral Monte Carlo (FPIMC) method. This method demonstrates a significant reduction of the “fermionic sign problem,” which takes place in standar...

[Phys. Rev. E 102, 033203] Published Thu Sep 03, 2020

]]>Large-amplitude fluctuations of the solar wind magnetic field can scatter energetic ions. One of the main contributions to these fluctuations is provided by solar wind discontinuities, i.e., rapid rotations of the magnetic field. This study shows that the internal configuration of such discontinuiti...

[Phys. Rev. E 102, 033201] Published Wed Sep 02, 2020

]]>Deeply modulated ion spectra from contaminants present on the target surface were measured at the interaction of ultraintense $(2-5)\times {10}^{20}\phantom{\rule{4pt}{0ex}}\mathrm{W}/\mathrm{c}{\mathrm{m}}^{2}$ and high-contrast laser pulses $(\lesssim {10}^{-10})$ with thin $(\sim \mu \mathrm{m})$ and ultrathin $(\sim \mathrm{nm})$ targets. This phenomenon, observed over a wide range of laser and target parameter...

[Phys. Rev. E 102, 023212] Published Wed Aug 26, 2020

]]>The formation of dynamical states for a collection of dust particles in two dimensions is shown using molecular dynamics simulations. The charged dust particles interact with each other with a Yukawa pair potential mimicking the screening due to plasma. An external radial confining force has also be...

[Phys. Rev. E 102, 023213] Published Wed Aug 26, 2020

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