Robust Collimation Control of Laser-Generated Ion Beam

TL;DR

This paper presents a robust solid structured collimation device that uses transverse electric fields to effectively reduce transverse velocity and improve collimation of laser-generated ion beams, demonstrated through particle-in-cell simulations.

Contribution

Introduction of a solid structured collimation device that enhances ion beam collimation and robustness against laser parameter variations, validated by 2.5D particle-in-cell simulations.

Findings

Device effectively reduces ion beam transverse velocity.

Collimation remains robust despite changes in laser parameters.

Simulations confirm improved beam quality and stability.

Abstract

The robustness of a structured collimation device is discussed for an intense-laser-produced ion beam. In this paper the ion beam collimation is realized by the solid structured collimation device, which produces the transverse electric field; the electric field contributes to reduce the ion beam transverse velocity and collimate the ion beam. Our 2.5 dimensional particle-in cell simulations demonstrate that the collimation device is rather robust against the changes in the laser parameters and the collimation target sizes. The intense short-pulse lasers are now available, and are used to generate an ion beam. The issues in the laser ion acceleration include an ion beam collimation, ion energy spectrum control, ion production efficiency, ion energy control, ion beam bunching, etc. The laser-produced ion beam tends to expand in the transverse and longitudinal directions during the ion beam propagation. The ion beam collimation is focused in this paper.