{
  "abstract": "We develop a theoretical model for self-generated magnetic islands in relativistic laser-driven channels in near-critical-density plasmas. The islands arise from the nonlinear superposition of the quasi-static magnetic fields generated by the longitudinal channel current $j_x$ and the laser-front driven transverse current $j_y$. By deriving the critical conditions among laser depletion, transversely symmetric channel formation, and magnetic-island formation, we identify the laser-plasma parameter window in which the magnetic island structures can exist. Within this window, the balance between the laser ponderomotive force and the charge-separation force, expressed through an effec tive electron density $n_\\mathrm{eff}$, determines the transverse island width $H$, whereas the mismatch between the laser group and phase velocities determines the longitudinal period $L$. Large-scale particle-in-cell simulations over a broad range of laser intensities and plasma densities validate the resulting scaling laws. The model turns the island geometry from a qualitative feature of the channel field into a predictable quantity, providing a basis for tailoring electron transport, particle acceleration, high-energy radiation, and novel fusion ignition schemes in relativistic laser-plasma interactions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.06562",
  "author_total": 6,
  "authors": [
    {
      "name": "Dongchi Cai"
    },
    {
      "name": "Zheng Gong"
    },
    {
      "name": "Guanqi Qiu"
    },
    {
      "name": "Deji Liu"
    },
    {
      "name": "Yinren Shou"
    },
    {
      "name": "Xueqing Yan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f7cvgj14hhfg7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.06562",
  "fulltext_url": null,
  "id": "f7cvgj14hhfg7",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.06562",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.acc-ph"
    ],
    [
      "arxiv",
      "physics.plasm-ph"
    ],
    [
      "openalex",
      "3106|Laser-Plasma Interactions and Diagnostics"
    ]
  ],
  "openalex": "W7212044096",
  "pdf_url": "https://arxiv.org/pdf/2609.06562",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f7cvgj14hhfg7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2609.06562",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.06562"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.acc-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Magnetic island structures in relativistic laser-driven plasma channels",
  "title_text": "Magnetic island structures in relativistic laser-driven plasma channels",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/f7cvgj14hhfg7",
  "venue": "arXiv",
  "versions": []
}