Generation of ten kilotesla longitudinal magnetic fields in ultraintense laser-solenoid target interactions

TL;DR

This paper demonstrates through 3D simulations that ultraintense laser interactions with a solenoid target can generate longitudinal magnetic fields up to ten kilotesla, enabling applications like particle control and inertial fusion.

Contribution

It introduces a novel method of producing extremely strong longitudinal magnetic fields using laser-solenoid interactions, supported by detailed simulation analysis.

Findings

Longitudinal magnetic fields up to 10 kT observed

Generation linked to electron currents in the solenoid

Potential applications in particle control and fusion

Abstract

Production of the huge longitudinal magnetic fields by using an ultraintense laser pulse irradiating a solenoid target is considered. Through three-dimensional particle-in-cell simulations, it is shown that the longitudinal magnetic field up to ten kilotesla can be observed in the ultraintense laser-solenoid target interactions. The finding is associated with both fast and return electron currents in the solenoid target. The huge longitudinal magnetic field is of interest for a number of important applications, which include controlling the divergence of laser-driven energetic particles for medical treatment, fast-ignition in inertial fusion, etc., as an example, the well focused and confined directional electron beams are realized by using the solenoid target.