{
  "abstract": "We report the acceleration of stable electron beams with energies up to 1.5 GeV using a 50 TW laser pulse guided in a preformed plasma channel generated by an axiparabola-focused heater pulse. Varying the channel length changes the plasma density beyond the channel end and produces distinct electron spectra. A short channel causes a large decrease in bubble size after the truncated channel, leaving only part of the electron bunch in the accelerating phase and resulting in a quasi-monoenergetic peak. For a longer channel ending near the target density down-ramp, the smaller density increase rephases and further accelerates a larger fraction of the bunch, producing a continuous high-charge spectrum. Hydrodynamic and particle-in-cell simulations reproduce the observed spectral evolution. Together, the measurements and simulations identify channel length as a key control parameter in guided laser-wakefield acceleration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.36964",
  "author_total": 9,
  "authors": [
    {
      "name": "Arujash Mohanty"
    },
    {
      "name": "Santhosh Krishnamurthy"
    },
    {
      "name": "Yinren Shou"
    },
    {
      "name": "Sheroy Tata"
    },
    {
      "name": "Anton Golovanov"
    },
    {
      "name": "Anda-Maria Talposi"
    },
    {
      "name": "Aaron Liberman"
    },
    {
      "name": "Eyal Kroupp"
    },
    {
      "name": "Victor Malka"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e2k6h9j6hhz6j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.36964",
  "fulltext_url": null,
  "id": "e2k6h9j6hhz6j",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.36964",
  "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.optics"
    ],
    [
      "arxiv",
      "physics.plasm-ph"
    ],
    [
      "openalex",
      "3106|Laser-Plasma Interactions and Diagnostics"
    ]
  ],
  "openalex": "W7214909143",
  "pdf_url": "https://arxiv.org/pdf/2609.36964",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e2k6h9j6hhz6j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.36964",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.36964"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.acc-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Electron Rephasing in a Truncated Tunable Plasma Channel",
  "title_text": "Electron Rephasing in a Truncated Tunable Plasma Channel",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/e2k6h9j6hhz6j",
  "venue": "arXiv",
  "versions": []
}