TY - EJOUR
AU - Kumar, Rakesh
AU - Malik, Hitendra K
AU - Kumar, Sandeep
PY - 2024
DA - August
TI - One-dimensional Study of Spatiotemporal Evolution of Magnetic Field by Weibel Instability in Counter-streaming Plasma Flows
T2 - Journal of Theoretical and Applied Physics
VL - 18
L1 - https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/one-dimensional-study-of-spatiotemporal-evolution-of-magnetic-field-by-weibel-instability-in-counter-streaming-plasma-flows/
DO - 10.57647/j.jtap.2024.1804.51
N2 - The plasma filamentation instability (FI), also known as the beam-Weibel instability, is responsible for the generation of magnetic fields and the acceleration of particles within collisionless astrophysical plasmas. In the present study, we employ Particle-In-Cell (PIC) simulation to model the filamentation instability driven by sub-relativistic electron-positron counter-streaming pairs in one spatial dimension moving with velocity . The temperature is taken to be hotter in one direction. The simulation box is aligned in y-direction (perpendicular to the beam velocity vector) with normalized length . The magnetic field is found to grow unconstrainedly and causes the particles to reorganize in space. Our findings have revealed that the magnetic pressure gradient that forms during the quasilinear evolution of the filamentation instability results in generating an electrostatic field component and both the electrostatic field and the magnetic field act to redistribute the particles within the spatial domain. The electromagnetic fields lead to the thermalization of the electrons. The filamentation instability exhibits effective mechanisms for accelerating electrons to high energy levels.
IS - 4
PB - OICC Press
KW - Weibel instability, Magnetic field amplification, PIC simulation, Counter-streaming electron-positron plasma flow, Pair-plasma 
EN -