Two-Dimensional Computation of Pulsed Magnetic Field Diffusion Dynamics in Gold Cone with Consideration of Inductive Heating and Temperature Dependence of Electrical Conductivity

TL;DR

This paper introduces a 2D electromagnetic simulation method to analyze pulsed magnetic field diffusion in gold cones, accounting for inductive heating and temperature-dependent electrical conductivity, relevant for laser-driven plasma experiments.

Contribution

The study develops a novel 2D simulation code that incorporates inductive heating and temperature-dependent conductivity to accurately model magnetic field diffusion in gold cones.

Findings

Effective modeling of magnetic field diffusion in gold cones.

Inclusion of inductive heating effects improves accuracy.

Temperature dependence significantly impacts magnetic field profiles.

Abstract

Application of an external kilo-tesla-level magnetic field, which can be generated using high-intensity laser, to a target is a promising scheme to reduce spray angle of a laser-driven relativistic electron beam (REB) for enhancing the isochoric heating of a dense plasma with the laser-driven REB. Here we have developed a two-dimensional electro-magnetic dynamics (2D-EMD) simulation code to solve Maxwell equations with considerations of the inductive heating and temperature-dependence of electrical conductivity of a material for calculating temporally and spatially resolved two-dimensional profile of the externally applied magnetic field in a gold-cone-attached target.