{
  "abstract": "Photoneutron reactions were investigated for the deformed $^{165}$Ho and $^{169}$Tm nuclei from the vicinity of the neutron emission threshold up to $\\sim$40~MeV, well above the giant dipole resonance (GDR) region, using quasimonochromatic laser Compton scattering $γ$-ray beams provided at the NewSUBARU facility, Japan. A high-and-flat efficiency moderated array of $^3$He counters was used for the neutron detection and an associated neutron multiplicity sorting method for extracting the $(γ,\\,1nX)$, $(γ,\\,2nX)$, $(γ,\\,3nX)$ and $(γ,\\,4nX)$ reaction cross sections and average neutron emission energies. The present $^{165}$Ho cross sections were compared to existing data, revealing discrepancies with the Saclay multiplicity sorting results and an overall 10$\\%$ strength difference with the Livermore ones. There are no other data for $^{169}$Tm. GDR parameters based on phenomenological Lorentzian models were extracted by fitting the present $σ(γ,\\,Sn)$ data with adjustments for the missing contribution of charged-particle-only reactions not observed experimentally. For both nuclei we observed high energy structures at 20-25~MeV, matching giant quadrupole resonance KMFR predictions. Based on the present centroid energies of the first and second GDR peaks, hydrodynamic model predictions gave intrinsic electric quadrupole moments of +7.00(34)~b and +7.38(28)~b for the ground states of $^{165}$Ho and $^{169}$Tm, respectively. The present experimental excitation functions and photoneutron energies were compared to statistical model calculations. Using the EMPIRE code, we performed a sensitivity test to phenomenological models of photon strength functions and nuclear level densities. The TALYS code was used to reproduce the present experimental $(γ,\\,inX)$ cross sections and average neutron energies using microscopic nuclear level density models.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.25984",
  "author_total": 22,
  "authors": [
    {
      "name": "I. Gheorghe"
    },
    {
      "name": "S. Goriely"
    },
    {
      "name": "K. Stopani"
    },
    {
      "name": "S. Belyshev"
    },
    {
      "name": "M. Krzysiek"
    },
    {
      "name": "D. Filipescu"
    },
    {
      "name": "H. Wang"
    },
    {
      "name": "G. Fan"
    },
    {
      "name": "L. Liu"
    },
    {
      "name": "H. Scheit"
    },
    {
      "name": "D. Symochko"
    },
    {
      "name": "T. Aumann"
    },
    {
      "name": "T. Renstrøm"
    },
    {
      "name": "G. M. Tveten"
    },
    {
      "name": "F. Furmyr"
    },
    {
      "name": "A. Görgen"
    },
    {
      "name": "A. C. Larsen"
    },
    {
      "name": "S. Siem"
    },
    {
      "name": "V. Orlin"
    },
    {
      "name": "T. Ari-izumi"
    },
    {
      "name": "S. Miyamoto"
    },
    {
      "name": "H. Utsunomiya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6cq2ayeptgwj0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.25984",
  "fulltext_url": null,
  "id": "6cq2ayeptgwj0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.25984",
  "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",
      "nucl-ex"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7214103849",
  "pdf_url": "https://arxiv.org/pdf/2609.25984",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6cq2ayeptgwj0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.25984",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.25984"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Photoneutron reactions on $^{165}$Ho and $^{169}$Tm in the giant dipole resonance region",
  "title_text": "Photoneutron reactions on ^165Ho and ^169Tm in the giant dipole resonance region",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/6cq2ayeptgwj0",
  "venue": "arXiv",
  "versions": []
}