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A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales $ \tilde \, 10^4 \,…

等离子体物理 · 物理学 2015-06-22 A. Stockem , T. Grismayer , R. A. Fonseca , L. O. Silva

We identify a mechanism for magnetic field generation in the interaction of intense electromagnetic waves and underdense plasmas. We show that Raman scattered plasma waves trap and heat the electrons preferentially in their propagation…

等离子体物理 · 物理学 2021-04-15 Thales Silva , Kevin Schoeffler , Jorge Vieira , Masahiro Hoshino , Ricardo Fonseca , Luis O. Silva

The interaction of strong electromagnetic fields with plasma generates radiation accompanied by a recoil force, which can significantly alter the plasma dynamics. In this work, we investigate the development of anisotropic momentum…

等离子体物理 · 物理学 2025-09-25 Haidar Al-Naseri

Anisotropy of kinetic coefficients in presence of a magnetic field is represented by Hall currents, which appear in a collisional medium due to action of the Lorentz force on the charged particles between collisions. We derive equations,…

等离子体物理 · 物理学 2026-04-28 G. S. Bisnovatyi-Kogan , M. V. Glushikhina

Magnetized high energy density physics offers new opportunities for observing magnetic field-related physics for the first time in the laser-plasma context. We focus on one such phenomenon, which is the ability of a laser-irradiated…

等离子体物理 · 物理学 2020-08-26 Y. Shi , K. Weichman , R. J. Kingham , A. V. Arefiev

Ultra-intense ultra-short laser is firstly used to irradiate the capacity-coil target to generate magnetic field. The spatial structure and temporal evolution of huge magnetic fields were studied with time-gated proton radiography method. A…

Non-Maxwellian metaequilibria can exist in low-collisionality plasmas as evidenced by satellite and laboratory measurements. By including the full pressure tensor dynamics in a fluid plasma model, we show that a sheared velocity field can…

等离子体物理 · 物理学 2016-05-11 Daniele Del Sarto , Francesco Pegoraro , Francesco Califano

A new generation mechanism of the magnetic field in an inhomogeneous collisionless plasma with a beam component is proposed. We show that even though the current and charge neutralities are initially satisfied, the current neutrality is…

高能天体物理现象 · 物理学 2020-06-17 Yutaka Ohira

Recent simulations show that very large electric and magnetic fields near the kilo Tesla strength will likely be generated by ultra-intense lasers at existing facilities over distances of hundreds of microns in underdense plasmas. Stronger…

等离子体物理 · 物理学 2022-03-02 M. Ángeles Pérez-García , A. Pérez Martínez , E. Rodríguez Querts

Bearing in mind the application to the outer crust of the neutron stars (NSs), we investigate the magnetic field decay by means of the fully relativistic Particle-In-Cell simulations. Numerical computations are carried out in 2-dimensions,…

高能天体物理现象 · 物理学 2015-05-20 Hiroyuki R. Takahashi , Kei Kotake , Nobutoshi Yasutake

The magnetic field which induced by the thermo-electric current in metals was detected and measured using of a flux-gate magnetometer. It is shown that the application of a temperature gradient on a metal rod gives rise to a circulating…

综合物理 · 物理学 2014-03-11 B. V. Vasiliev

The magnetic field generation by a relativistic laser light irradiated on a thin target at the oblique incidence is investigated using a two dimensional particle-in-cell simulation. The surface magnetic field inhibits the electron transport…

等离子体物理 · 物理学 2007-05-23 Susumu Kato , Tatsufumi Nakamura , Kunioki Mima , Yasuhiko Sentoku , Hideo Nagatomo , Yoshiro Owadano

We carry out 3D and 2D PIC-simulations of the expansion of a magnetized plasma that initially uniformly fills a half-space and contains a semi-cylindrical region of heated electrons elongated along the surface of the plasma boundary. This…

等离子体物理 · 物理学 2022-06-08 Mikhail Garasev , Anton Nechaev , Andrey Stepanov , Vitaly Kocharovsky , Vladimir Kocharovsky

We present a new magnetic field generation mechanism in underdense plasmas driven by the beating of two, co-propagating, Laguerre-Gaussian (LG) orbital angular momentum (OAM) laser pulses with different frequencies and also different twist…

等离子体物理 · 物理学 2018-10-10 Y. Shi , J. Vieira , R. M. G. M. Trines , R. Bingham , B. F. Shen , R. J. Kingham

Particle-in-cell simulations are used to investigate the formation of magnetic fields, B, in plasmas with perpendicular electron density and temperature gradients. For system sizes, L, comparable to the ion skin depth, d_i, it is shown that…

等离子体物理 · 物理学 2015-06-16 K. M. Schoeffler , N. F. Loureiro , R. A. Fonseca , L. O. Silva

Magnetic fields are generated in ionized objects rotating with respect to a radiation background. Based on conservation of canonical ion momentum, it has been previously suggested that even if the radiation intensity is unrestricted the…

天体物理学 · 物理学 2009-11-10 L. Chuzhoy

A new simple mechanism due to cold electron flow to produce strong magnetic field is proposed. A 600-T strong magnetic field is generated in the free space at the laser intensity of 5.7x10^15 Wcm^-2. Theoretical analysis indicates that the…

It is demonstrated that targets with a broken rotational symmetry may facilitate generation of a strong axial (poloidal) magnetic field. An intense laser beam irradiating such a target creates intense electron currents carrying vorticity…

等离子体物理 · 物理学 2017-04-05 Ph. Korneev , V. Tikhonchuk , E. d'Humières

We address the electronically induced anisotropy field acting on a spin moment comprised in a vibrating magnetic molecule located in the junction between ferromagnetic metals. Under weak coupling between the electrons and molecular…

介观与纳米尺度物理 · 物理学 2018-06-20 J. D. Vasquez Jaramillo , H. Hammar , J. Fransson

A magnetic field was recently shown to enhance field-parallel heat conduction in a strongly correlated plasma whereas cross-field conduction is reduced. Here we show that in such plasmas, the magnetic field has the additional effect of…

等离子体物理 · 物理学 2017-01-25 T. Ott , M. Bonitz , P. Hartmann , Z. Donkó
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