{
  "abstract": "Fission fragments are born rotating rapidly, but the evolution of this spin with excitation energy and its impact on fission observables remain largely unknown. Combining state-of-the-art microscopic and statistical reaction theory, we simulate the full fission process - from the initial state, through scission, to fragment decay - and report the first microscopic, energy-resolved spin and parity distributions of the fragments produced in $^{239}$Pu(n,f). From thermal energy to $E_n = 10$ MeV, the spin of individual fragments evolves non-monotonically, tracking their deformation. The parity content, strongly non-statistical at thermal energy, remains correlated with spin throughout this range. For the first time, we quantify the impact of microscopic spin-parity distributions on prompt photon multiplicities, demonstrating the predictive potential of parameter-free microscopic inputs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.03018",
  "author_total": 4,
  "authors": [
    {
      "name": "Petar Marević"
    },
    {
      "name": "Nicolas Schunck"
    },
    {
      "name": "Antonio Bjelčić"
    },
    {
      "name": "Guillaume Scamps"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/331mdz4vrxngy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.03018",
  "fulltext_url": null,
  "id": "331mdz4vrxngy",
  "issns": [],
  "landing_url": "https://hal.science/hal-05835190v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.nucl"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7220398352",
  "pdf_url": "https://arxiv.org/pdf/2610.03018",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/331mdz4vrxngy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "hal-05835190",
      "source": "hal",
      "url": "https://hal.science/hal-05835190v1"
    },
    {
      "first_seen": "2026-10-30T12:26:45Z",
      "native_id": "2610.03018",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.03018"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Energy-Resolved Spin and Parity Distributions of Fission Fragments",
  "title_text": "Energy-Resolved Spin and Parity Distributions of Fission Fragments",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:45Z",
  "url": "https://research.draconitic.com/paper/331mdz4vrxngy",
  "venue": "HAL",
  "versions": []
}