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Abstract <p>Control of laser-driven ion beams and, in particular, their divergence is an important problem actively studied by numerous research groups. This work considers a collimation system based on the use of a laser driven micro-wire target. Using Particle-In-Cell modeling, we demonstrate that kilotesla-level quasistationary azimuthal magnetic fields excited around the wire in the process of its irradiation by a relativistic laser pulse with <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11452_2025_3849_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="43" /> </InlineMediaObject> <EquationSource Format="TEX">\({\sim} {{10}^{{19}}}\)</EquationSource> <!--PlasPhys2560330Bukharskii-m1--> </InlineEquation> W/cm<sup>2</sup> intensity can collimate <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11452_2025_3849_Article_IEq2.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="31" /> </InlineMediaObject> <EquationSource Format="TEX">\( {\simeq} 10\)</EquationSource> <!--PlasPhys2560330Bukharskii-m2--> </InlineEquation> MeV protons created via the TNSA mechanism. The proposed scheme is very simple and compact, does not require additional high-power sources and can be further optimized to increase its efficiency.</p>

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Efficient Guiding of Laser-Driven Proton Beam with Azimuthal Magnetic Fields Induced by Relativistic Discharge Pulse in Micro-Wire

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • N. D. Bukharskii,
  • Ph. A. Korneev

摘要

Abstract

Control of laser-driven ion beams and, in particular, their divergence is an important problem actively studied by numerous research groups. This work considers a collimation system based on the use of a laser driven micro-wire target. Using Particle-In-Cell modeling, we demonstrate that kilotesla-level quasistationary azimuthal magnetic fields excited around the wire in the process of its irradiation by a relativistic laser pulse with \({\sim} {{10}^{{19}}}\) W/cm2 intensity can collimate \( {\simeq} 10\) MeV protons created via the TNSA mechanism. The proposed scheme is very simple and compact, does not require additional high-power sources and can be further optimized to increase its efficiency.