{
  "abstract": "The interaction between relativistic electron beams and plasma can generate magnetic fields with strengths of $\\sim 10^4$ T far exceeding conventional magnets, which offers a promising environment for producing weakly coupled particles. Using particle-in-cell simulations incorporating an axion-emission model, we show that a 10-GeV electron beam traversing dense plasma emits a forward-collimated axion beam during the ion-mediated nonlinear stage of current filamentation instability. Although the electron-driven linear instability seeds the filaments, ion motion governs their subsequent expansion and coalescence. This evolution reinjects cold-core electrons into large-amplitude orbits in phase space, where they repeatedly cross the strong-field flanks of neighboring magnetic vortices, thereby enhancing axion emission. At a background-plasma density of $\\sim 10^{21}\\mathrm{cm}^{-3}$, suppressing ion motion reduces the axion yield by a factor of 14.5. Our results demonstrate that ion dynamics play a crucial role in characterizing the emission of weakly coupled particles induced by relativistic filamentation instabilities, suggesting a new beam-driven method for probing the axion-electron interaction at accelerators.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.02824",
  "author_total": 4,
  "authors": [
    {
      "name": "Zhi-Bo Zhang"
    },
    {
      "name": "Pei-Lun He"
    },
    {
      "name": "Zheng Gong"
    },
    {
      "name": "Yue-Yue Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/992qm3gcdzkv0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.02824",
  "fulltext_url": null,
  "id": "992qm3gcdzkv0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.02824",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.02824",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/992qm3gcdzkv0.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.02824",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.02824"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Axion Emission Controlled by Ion Motion in Relativistic Beam-Plasma Filamentation",
  "title_text": "Axion Emission Controlled by Ion Motion in Relativistic Beam-Plasma Filamentation",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/992qm3gcdzkv0",
  "venue": "arXiv",
  "versions": []
}