{
  "abstract": "We present preliminary results from a measurement campaign conducted with the FIPPS $γ$-ray spectrometer at the ILL using an active target made of $^{235}$U dissolved in a liquid scintillator. Prompt $γ$ rays were used to extract absolute, independent isotopic fission yields. We obtained yields for a selected set of well-produced even-even nuclei from the $^{235}$U(n$_{\\mathrm{th}}$,f) reaction and compared them with JEFF-3.3 evaluated data. This included the doubly magic nucleus $^{132}$Sn, for which we observed a pronounced deficit (about a factor 7) with respect to JEFF-3.3. Using the FIFRELIN fission fragment de-excitation code, we interpreted this discrepancy as evidence that $^{132}$Sn is mainly produced in its ground state at scission or after neutron evaporation. Delayed $γ$ rays recorded in the same experiment were also analysed. No deviation was found in the beta decay of $^{132}$Sn compared to the nuclear database. However, an excess of about a 40% was found in the $β$ decay of $^{90}$Kr, which may originate from an overestimated ground-state feeding of $^{90}$Rb in the evaluated data.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.13033",
  "author_total": 14,
  "authors": [
    {
      "name": "T Materna"
    },
    {
      "name": "P Herran"
    },
    {
      "name": "M Ballu"
    },
    {
      "name": "Q Poirier"
    },
    {
      "name": "A Letourneau"
    },
    {
      "name": "D Doré"
    },
    {
      "name": "L Thulliez"
    },
    {
      "name": "C Michelagnoli"
    },
    {
      "name": "F Kandzia"
    },
    {
      "name": "Y.H Kim"
    },
    {
      "name": "U Köster"
    },
    {
      "name": "O Litaize"
    },
    {
      "name": "O Sérot"
    },
    {
      "name": "A Chebboubi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/csvr1ccp8j68m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.13033",
  "fulltext_url": null,
  "id": "csvr1ccp8j68m",
  "issns": [],
  "landing_url": "https://hal.science/hal-05771266v1",
  "language": "en",
  "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",
      "nucl-ex"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.nexp"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7213173298",
  "pdf_url": "https://arxiv.org/pdf/2609.13033",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/csvr1ccp8j68m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:44Z",
      "native_id": "hal-05771266",
      "source": "hal",
      "url": "https://hal.science/hal-05771266v1"
    },
    {
      "first_seen": "2026-10-30T12:21:07Z",
      "native_id": "2609.13033",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.13033"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Results on $^{235}$U(n$_{\\mathrm{th}}$,f) isotopic fission yields using prompt and delayed gamma rays at the FIPPS spectrometer of the ILL",
  "title_text": "Results on ^235U(n_th,f) isotopic fission yields using prompt and delayed gamma rays at the FIPPS spectrometer of the ILL",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:07Z",
  "url": "https://research.draconitic.com/paper/csvr1ccp8j68m",
  "venue": "HAL",
  "versions": []
}