{
  "abstract": "This paper focuses on a modified fuel that combines the theory of spin-polarized fuel with non-thermal \"hot-tail\" reactions for D-T, D-3He, and D-D reactions. We find that this combination is particularly advantageous for the D-3He fuel in several respects. First, a large reactivity enhancement: one order of magnitude at 10 keV for a small hot tail (F = 0.1), rising to two orders of magnitude for a larger one (F = 0.6), with polarization adding a further factor of 1.5. Second, an ideal ignition energy far below the thermal value: 9.5 keV at F = 0.3 down to 3.2 keV at F = 0.5, which polarization reduces further to 3.8 keV and 1.3 keV, respectively. Third, the asymmetric enhancement between the primary reaction and the secondary reactions in the fuel opens the possibility of a neutron-lean reaction. Quantifying this with a neutrons-per-watt metric, we find that a thermal D-3He plasma at 10 keV is barely neutron-lean at all (90-95% of the D-T neutron rate per watt), whereas a hot tail of F = 0.1 reduces it by 4.7-7.7x and the polarized non-thermal fuel at its ignition point reaches 3.0-5.4% of the D-T value, with only 0.4-2.4% of the fusion power carried by neutrons. The range spans prompt removal versus complete in-situ burnup of the bred tritium. Applied to a 200 MW worked example anchored on the ARTEMIS D-3He reactor design, this is a first-wall neutron loading of 0.008-0.043 MW/m^2 against 1.45 MW/m^2 for D-T in the same chamber, extending the time to reach 20 dpa from about 1.5 full-power years to 27.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.36310",
  "author_total": 2,
  "authors": [
    {
      "name": "Pascal Zhang"
    },
    {
      "name": "Ahmed Diallo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a5x0dkpjh9qk8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.36310",
  "fulltext_url": null,
  "id": "a5x0dkpjh9qk8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.36310",
  "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.plasm-ph"
    ],
    [
      "openalex",
      "3106|Magnetic confinement fusion research"
    ]
  ],
  "openalex": "W7224089162",
  "pdf_url": "https://arxiv.org/pdf/2610.36310",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a5x0dkpjh9qk8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.36310",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.36310"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Neutron-Lean D-3He Fusion by Asymmetric Enhancement of the Primary Reaction: A Spin-Polarized Non-Thermal Hot Tail",
  "title_text": "Neutron-Lean D-3He Fusion by Asymmetric Enhancement of the Primary Reaction: A Spin-Polarized Non-Thermal Hot Tail",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/a5x0dkpjh9qk8",
  "venue": "arXiv",
  "versions": []
}