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The investigation of dynamics of intense solitary wave groups of collinear surface waves is performed by means of numerical simulations of the Euler equations and laboratory experiments. The processes of solitary wave generation, reflection…

流体动力学 · 物理学 2017-04-26 A. Slunyaev , M. Klein , G. F. Clauss

The electron dynamics of rare gas clusters in laser fields is investigated quantum mechanically by means of time-dependent density functional theory. The mechanism of early inner and outer ionization is revealed. The formation of an…

原子物理 · 物理学 2009-11-10 D. Bauer , A. Macchi

We use particle-in-cell (PIC) simulations and simple analytic models to investigate the laser-plasma interaction known as ponderomotive steepening. When normally incident laser light reflects at the critical surface of a plasma, the…

lasma instabilities excited in collisionless shocks are responsible for particle acceleration. We have investigated the particle acceleration and shock structure associated with an unmagnetized relativistic electron-positron jet propagating…

The disassembly of molecular clusters $(N_2)_n$ ($n$=50-3000) in strong optical fields is investigated using two-dimensional time-of-flight spectrometry. Very highly charged ions are formed with a two-component energy distribution. A…

原子与分子团簇 · 物理学 2009-11-10 M. Krishnamurthy , D. Mathur , V. Kumarappan

In a previous paper we suggested that a macroscopic force field applied across a two-dimensional electron gas channel could induce a microscopic charge density wave as soon as the proper compressibility becomes negative, which happens at…

介观与纳米尺度物理 · 物理学 2020-11-24 Erica Hroblak , Mohammad Zarenia , Giovanni Vignale

Applying the separated spin evolution quantum hydrodynamics to two-dimensional electron gas in plane samples and nanotubes located in external magnetic fields we find new kind of wave in electron gas, which is called the spin-electron…

等离子体物理 · 物理学 2016-01-05 Pavel A. Andreev , L. S. Kuz'menkov

An electron irradiated by a linearly polarized relativistic intensity laser pulse in a cylindrical plasma channel can gain significant energy from the pulse. The laser electric and magnetic fields drive electron oscillations in a plane…

等离子体物理 · 物理学 2016-03-23 A. V. Arefiev , V. N. Khudik , A. P. L. Robinson , G. Shvets , L. Willingale

In this paper, we establish nonlinear Landau damping below survival threshold for collisionless charged particles following the meanfield Vlasov theory near general radial equilibria. In absence of collisions, the long-range Coulomb pair…

偏微分方程分析 · 数学 2024-12-30 Toan T. Nguyen

Laser plasma interaction with micro-engineered targets at relativistic intensities has been greatly promoted by recent progress in the high contrast lasers and the manufacture of advanced micro- and nano-structures. This opens new…

等离子体物理 · 物理学 2016-03-10 Longqing Yi , Alexander Pukhov , Baifei Shen

Utilizing a two-phase supersonic chemically reacting flow solver with the Eulerian-Lagrangian method implemented in OpenFOAM, this study computationally investigates the formation of liquid-fueled oblique detonation waves (ODWs) within a…

流体动力学 · 物理学 2024-07-26 Wenhao Wang , Zongmin Hu , Peng Zhang

When electrons in a solid are excited with light, they can alter the free energy landscape and access phases of matter that are beyond reach in thermal equilibrium. This accessibility becomes of vast importance in the presence of phase…

Plasma is a medium filled with free electrons and positive ions. Each particle acts as a conducting fluid with a single velocity and temperature when electromagnetic fields are present. This distinction between the roles played by electrons…

等离子体物理 · 物理学 2024-10-01 Emily Kelting , J. Douglas Wright

Advances in ultra-intense laser technology are enabling, for the first time, relativistic intensities at mid-infrared (mid-IR) wavelengths. Anticipating further experimental research in this domain, we present high-resolution two…

We propose a new approach to high-intensity laser-driven electron acceleration in a plasma. Here, we demonstrate that a plasma wave generated by a stimulated forward-scattering of an incident laser pulse can be in a longest acceleration…

等离子体物理 · 物理学 2014-05-09 A. A. Rukhadze , S. P. Sadykova , T. G. Samkharadze , P. Gibbon

This work reports numerical experiments intended to clarify the internal equilibration process in large molecules, following vibrational excitation. A model of amorphous and oxygenated hydrocarbon macromolecule (about 500 atoms)--simulating…

天体物理学 · 物理学 2009-11-07 R. Papoular

We consider the parametric excitation of a Langmuir wave and an electromagnetic wave by gravitational radiation, in a thin plasma on a Minkowski background. We calculate the coupling coefficients starting from a kinetic description, and the…

天体物理学 · 物理学 2009-10-31 Gert Brodin , Mattias Marklund

Mutual collisions between ion-acoustic (IA) solitary waves are studied based on a fully kinetic simulation approach. Two cases, small and large relative velocity, are studied and the effect of trapped electron population on the collision…

等离子体物理 · 物理学 2019-03-15 S. M. Hosseini Jenab , F. Spanier , G. Brodin

We studied a vertical ``quantum dot molecule'', where one of the dots is occupied with electrons and the other with holes. We find that different phases occur in the ground state, depending on the carrier density and the interdot distance.…

介观与纳米尺度物理 · 物理学 2009-11-10 K. Karkkainen , M. Koskinen , M. Manninen , S. M. Reimann

The region surrounding the excitonic insulator phase is a three-component plasma composed of electrons, holes, and excitons. Due to the extended nature of the excitons, their presence influences the surrounding electrons and holes. We…

强关联电子 · 物理学 2015-06-22 B Zenker , D Ihle , F X Bronold , H Fehske