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The effects of the initial spin orientation on the final electron beam polarization via laser wakefield acceleration in pre-polarized plasma are investigated theoretically and numerically. From a variation of the initial spin direction, the…

Plasma Physics · Physics 2025-02-13 L. R. Yin , X. F. Li , Y. J. Gu , N. Cao , Q. Kong , M. Buescher , S. M. Weng , M. Chen , Z. M. Sheng

We investigate the dynamics of ion crystals in zigzag configuration in transverse magnetic field gradients. A surface-electrode Paul trap is employed to trap $^{40}$Ca$^+$ ions and features submerged wires to generate magnetic field…

Quantum Physics · Physics 2019-05-22 J. Welzel , F. Stopp , F. Schmidt-Kaler

Motivated by experimental developments in non-Kramers spin ice materials and the unclear role of disorder therein, we study the impact of random transverse fields on the dynamics of correlated magnetic systems. We model the effect of…

Strongly Correlated Electrons · Physics 2025-07-17 Yufei Pei , Claudio Castelnovo , Roderich Moessner

In order to resolve and characterize anisotropy in turbulent plasma flows a proper estimation of the background magnetic field is crucially important. Various approaches to calculate the background magnetic fields, ranging from local fields…

Space Physics · Physics 2017-07-05 Felix Gerick , Joachim Saur , Michael von Papen

Using a phase-field model, we study the surface diffusion-controlled grooving of a moving grain boundary under the influence of an external magnetic field in thin films of a nonmagnetic material. The driving force for the grain boundary…

Mesoscale and Nanoscale Physics · Physics 2024-08-27 Soumya Bandyopadhyay , Somnath Bhowmick , Rajdip Mukherjee

The magnon pumping effect in ferromagnetic insulators under an external time-dependent transverse magnetic field is theoretically studied. Generation of a magnon current is discussed by calculating the magnon source term in the spin…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Kouki Nakata , Gen Tatara

When a beam of light is laterally confined, its field distribution can exhibit points where the local magnetic and electric field vectors spin in a plane containing the propagation direction of the electromagnetic wave. The phenomenon…

Optics · Physics 2018-05-23 Martin Neugebauer , Jörg Eismann , Thomas Bauer , Peter Banzer

The effect of nonlinearity on plasma wake wave excited by a relativistic cylindrical charged bunch is investigated. It is shown that owing to the nonlinearity the amplitude of wake wave gets modulated in the longitudinal direction. The…

Accelerator Physics · Physics 2007-05-23 A. G. Khachatryan , S. S. Elbakian

Magnetized plasmas with equilibrium density gradients support drift-wave turbulence, which is often regulated by self-generated zonal flows. In this work, we experimentally examine the effect of increasing the magnetic field on turbulence…

In natural and laboratory magnetized plasmas, an equilibrium electric field may exist perpendicular to the background magnetic field. In such a situation all the plasma species experience a common drift and the unperturbed distribution…

Plasma Physics · Physics 2020-10-22 Deng Zhou

Ion motion in plasma wakefield accelerators can cause temporal increase of the longitudinal electric field shortly before the wave breaks. The increase is caused by re-distribution of the wave energy in transverse direction and may be…

Plasma Physics · Physics 2019-10-23 V. A. Minakov , A. P. Sosedkin , K. V. Lotov

We examine a charge lattice coupled to a one-dimensional asymmetric potential in the presence of an applied magnetic field, which induces gyrotropic effects in the charge motion. This system could be realized for Wigner crystals in…

Strongly Correlated Electrons · Physics 2024-04-23 C. J. O. Reichhardt , C. Reichhardt

In this work we present a theoretical approach to study the effect of an in-plane (parallel) magnetic field on the microwave-assisted transport properties of a two-dimensional electron system. Previous experimental evidences show that…

Mesoscale and Nanoscale Physics · Physics 2012-11-22 Jesus Inarrea , Gloria Platero

We present a simple numerical model of the plasma flow within the open field line tube in the pulsar magnetosphere. We study how the plasma screens the rotationally induced electric field and maintains the electric current demanded by the…

High Energy Astrophysical Phenomena · Physics 2011-02-11 Yuri Lyubarsky

We have used time-resolved x-ray photoemission electron microscopy to investigate the magnetization dynamics induced by nanosecond current pulses in NiFe/Cu/Co nanostripes. A large tilt of the NiFe magnetization in the direction transverse…

A novel effect of fast heating and charging a finite-radius plasma is discovered in the context of plasma wakefield acceleration. As the plasma wave breaks, the most of its energy is transferred to plasma electrons which create strong…

Plasma Physics · Physics 2015-06-18 Konstantin Lotov , Alexander Sosedkin , Alexey Petrenko

We present the first observations of the transverse component of photospheric magnetic field acquired by the imaging magnetograph Sunrise/IMaX. Using an automated detection method, we obtain statistical properties of 4536 features with…

The wakefield and stopping power of an ion-beam pulse moving in magnetized plasmas are investigated by particle-in-cell (PIC) simulations. The effects of beam velocity and density on the wake and stopping power are discussed. In the…

Plasma Physics · Physics 2016-08-24 Xiao-ying Zhao , Hong-Peng Xu , Yong-tao Zhao , Xin Qi , Lei Yang

The main purpose of this work is the investigation of the influence of electron-positron-ion on the electrostatic wakefields that are driven by intense, short electromagnetic wave packets in a three component unmagnetized plasma. The…

Plasma Physics · Physics 2016-09-08 Magdy Yassin EL Ashry , EL Sayed Ibrahim Shalaan

In this paper, wakefields driven by a relativistic electron beam in a cold homogeneous plasma is studied using 2-D fluid simulation techniques. It has been shown that in the limit when the transverse size of a rigid beam is greater than the…

Plasma Physics · Physics 2019-09-24 Ratan Kumar Bera , Devshree Mandal , Amita Das , Sudip Sengupta