{
  "abstract": "The probability of double \\(K\\)-shell vacancy production following electron-capture decay is determined for $^{55}$Fe using a high-resolution microcalorimeter. The \\(K\\)-hypersatellite lines arising from double \\(K\\)-shell-vacancy filling are directly resolved within the measured spectra of X-ray emissions which are dominated by Mn \\(K\\)-X-ray diagram lines. The energies of the Mn \\textit{K}-hypersatellite lines, \\(Kα_2^h\\), \\(Kα_1^h\\), and \\(Kβ_{1,3}^h\\), are measured as $(6143.5\\pm0.5)$ eV, $(6162.1\\pm1.5)$ eV and $(6811.9\\pm2.6)$ eV, respectively. The relative intensities of \\textit{K}-hypersatellite to diagram X-rays are measured to be $(1.30 \\pm 0.07) \\times 10^{-4}$. From the relative intensities together with established fluorescence yield values, the probability of double-vacancy creation per \\(K\\)-shell capture ($P_{KK}$) is determined as $(1.22 \\pm 0.09) \\times 10^{-4}$. Comparisons with previous experimental results and theoretical calculations are discussed.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29715",
  "author_total": 18,
  "authors": [
    {
      "name": "Shuo Zhang"
    },
    {
      "name": "Karol Kozioł"
    },
    {
      "name": "Caojie Shao"
    },
    {
      "name": "Ruitian Zhang"
    },
    {
      "name": "Cheng Qian"
    },
    {
      "name": "Kebao Shu"
    },
    {
      "name": "JingKai Xia"
    },
    {
      "name": "Guocheng Wei"
    },
    {
      "name": "Yingli Xue"
    },
    {
      "name": "Huan Jia"
    },
    {
      "name": "Neng Pu"
    },
    {
      "name": "Hanjie Cai"
    },
    {
      "name": "Deyang Yu"
    },
    {
      "name": "Hongqiang Zhang"
    },
    {
      "name": "Liangting Sun"
    },
    {
      "name": "Yuan He"
    },
    {
      "name": "Reinhold Schuch"
    },
    {
      "name": "Xinwen Ma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fszh4qfxgbmzq.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29715",
  "fulltext_url": null,
  "id": "fszh4qfxgbmzq",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29715",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "nucl-ex"
    ],
    [
      "openalex",
      "3108|X-ray Spectroscopy and Fluorescence Analysis"
    ]
  ],
  "openalex": "W7223218417",
  "pdf_url": "https://arxiv.org/pdf/2610.29715",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fszh4qfxgbmzq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29715",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29715"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Experimental determination of the double $K$-shell vacancy creation probability in the electron-capture decay of $^{55}$Fe with a microcalorimeter",
  "title_text": "Experimental determination of the double K-shell vacancy creation probability in the electron-capture decay of ^55Fe with a microcalorimeter",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/fszh4qfxgbmzq",
  "venue": "arXiv",
  "versions": []
}