Simulating the external magnetic field in short-pulse intense laser-plasma interaction
Abstract
Imposing an external magnetic field in short-pulse intense laser-plasma interaction is of broad scientific interest in related plasma research areas. We propose a simple method using a virtual current layer by introducing an extra current density term to simulate the external magnetic field, and demonstrate it with three-dimensional particle-in-cell simulations. The field distribution and its evolution in sub-picosecond time scale are obtained. The magnetization process takes a much longer time than that of laser-plasma interaction due to plasma diamagnetism arising from collective response. The long-time evolution of magnetic diffusion and diamagnetic current can be predicted based on a simplified analytic model in combination with simulations.
Cite
@article{arxiv.1909.07301,
title = {Simulating the external magnetic field in short-pulse intense laser-plasma interaction},
author = {K. Jiang and C. T. Zhou and S. Z. Wu and H. Zhang and C. N. Wu and T. Y. Long and L. Li and T. W. Huang and L. B. Ju and B. Qiao and M. Y. Yu and S. P. Zhu and S. C. Ruan},
journal= {arXiv preprint arXiv:1909.07301},
year = {2019}
}
Comments
5 pages, 5 figures