{
  "abstract": "Direct observation of the temporal-energy structure of pulsed electron beams is crucial for beam-driven light generation and time-resolved microscopic imaging. In this study, we characterized the spatially non-uniform time-energy structure in multi-electron ultrashort pulses exhibiting significant space-charge effects. By combining spectral hole burning originating from the photon-induced near-field electron microscopy (PINEM) effect with angle-resolved energy analysis, we observed time-energy correlations at each beam angle. Applying this method to 37-keV pulses containing up to 17 electrons per pulse, we determined energy spread and chirp rate, which vary by up to 100% and 40%, respectively, across the entire beam. These findings highlight the importance of characterizing multi-electron pulses with spatial or angular resolution and suggest the utility of spatially modulated light for the shaping of high-flux pulsed electron beams.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.20141",
  "author_total": 2,
  "authors": [
    {
      "name": "Yuichi Tachibana"
    },
    {
      "name": "Yuya Morimoto"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7seg2c5474krr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.20141",
  "fulltext_url": null,
  "id": "7seg2c5474krr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.20141",
  "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.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.20141",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7seg2c5474krr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.20141",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.20141"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Characterization of spatially inhomogeneous chirp in ultrashort multielectron beams via femtosecond hole burning",
  "title_text": "Characterization of spatially inhomogeneous chirp in ultrashort multielectron beams via femtosecond hole burning",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/7seg2c5474krr",
  "venue": "arXiv",
  "versions": []
}