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Abstract <p>In high intensity laser accelerated beams (HILABs), numerous phenomena influence considerably various stages of the acceleration process, impacting beams quality. This study aims to analyze the Bragg-peak dose distribution behavior by characterizing the maximum energy, proton count, and dose distribution in HILAB, focusing on the interaction between suprathermal and relativistic electrons. These events arise from the strong plasma nonlinearity induced by intense laser fields. We&#xa0;employ a theoretical models to simulate proton acceleration combined with Monte-Carlo methods for dose investigation. It is shown that the competition between these factors leads to significant improvements in proton beam stability, producing a high-quality energy spectrum and an optimal Bragg-peak dose distribution, within the range of values for the electron suprathermality and relativistic parameters (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\kappa ,\theta \)</EquationSource> <!--BullLeb2560429Boumedine-m1--> </InlineEquation>) that were optimized numerically.</p>

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Modeling Proton Beam Behavior Driven by Laser-Plasma Acceleration in the Presence of Relativistic and Suprathermal Electrons

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • L. Boumedine,
  • D. Bara,
  • E. Dahi,
  • N. Ounoughi,
  • D. Bennaceur-Doumaz,
  • F. Kharfi

摘要

Abstract

In high intensity laser accelerated beams (HILABs), numerous phenomena influence considerably various stages of the acceleration process, impacting beams quality. This study aims to analyze the Bragg-peak dose distribution behavior by characterizing the maximum energy, proton count, and dose distribution in HILAB, focusing on the interaction between suprathermal and relativistic electrons. These events arise from the strong plasma nonlinearity induced by intense laser fields. We employ a theoretical models to simulate proton acceleration combined with Monte-Carlo methods for dose investigation. It is shown that the competition between these factors leads to significant improvements in proton beam stability, producing a high-quality energy spectrum and an optimal Bragg-peak dose distribution, within the range of values for the electron suprathermality and relativistic parameters ( \(\kappa ,\theta \) ) that were optimized numerically.