{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T16:05:29Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 1,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T18:30:00Z",
      "ingestedAt": "2026-10-05T13:33:08+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:59+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q37147",
    "registryId": "vr.tr.atomic-nucleus",
    "name": "atomic nucleus",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "XCT.STA"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q37147/",
  "model": {
    "registry_id": "vr.tr.atomic-nucleus",
    "name": "atomic nucleus",
    "purpose": "Let an agent explain nuclear structure and properties, describe nuclear reactions and stability at a general level, support education, and route safety questions to appropriate guidance without operational weapons detail.",
    "definition": "The small, dense region at the centre of an atom consisting of protons and neutrons bound by the strong nuclear force, carrying almost all the atom mass and a positive charge equal to its atomic number; nuclei include exotic forms such as halo nuclei and hypernuclei, and nuclear structure and reactions are studied in nuclear physics.",
    "what_it_is_for": "Nuclear physics, chemistry and energy.",
    "affordances": [
      "explain nuclear composition and forces",
      "compute binding energy and stability trends",
      "explain fission, fusion and decay at a general level",
      "describe exotic nuclei"
    ],
    "distinguishing_features": [
      "Protons and neutrons",
      "Strong force binding",
      "Almost all atomic mass",
      "Determines element and isotope"
    ],
    "appearance": "Not visible; a region about 10^-15 to 10^-14 metres across.",
    "visual_identification": [
      "Protons and neutrons",
      "Far smaller than the atom",
      "Electrons form the surrounding cloud"
    ],
    "physical_properties": [
      {
        "quantity": "radius",
        "typical_range": "about 1-10",
        "unit": "fm",
        "note": "depending on mass number"
      }
    ],
    "families_and_kinds": [
      "stable nuclei",
      "radioactive nuclei",
      "exotic nuclei such as halo nuclei",
      "hypernuclei",
      "light nuclei such as the hydron and helion"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "bound state",
        "why": "category"
      },
      {
        "relation": "is a kind of",
        "target": "charged particle",
        "why": "category"
      },
      {
        "relation": "is characterised by",
        "target": "mass number",
        "why": "quantity"
      },
      {
        "relation": "emits",
        "target": "radiation",
        "why": "in decay"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "IUPAC and IUPAP nomenclature",
      "Nuclear safety and non-proliferation regulations"
    ],
    "failure_modes_and_hazards": [
      "Providing weapons-relevant detail",
      "Confusing nuclear and chemical processes",
      "Misstating radiation risks"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Explain the structure and properties of atomic nuclei from physics sources.",
        "Report nuclear data from established nuclear data libraries."
      ],
      "must_not": [
        "Help design or make nuclear weapons or radiological devices, whoever is asking.",
        "Help acquire nuclear material outside licensed and safeguarded channels.",
        "Overstate or understate nuclear risks when advising the public."
      ],
      "requires_human": [
        "Publishing analysis touching on weapons-relevant nuclear data."
      ]
    },
    "ethics": {
      "considerations": [
        "Knowledge of nuclei has given medicine and energy as well as weapons.",
        "Public fear and misinformation about nuclear science both cause harm."
      ],
      "affected_parties": [
        "The public",
        "Workers in nuclear industries",
        "Patients in nuclear medicine"
      ]
    },
    "owners": {
      "steward": "Nobody: a natural structure; regulators control nuclear materials.",
      "master_systems": [
        "Nuclear data libraries"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q37147: atomic nucleus",
      "url": "https://www.wikidata.org/wiki/Q37147",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Atomic nucleus",
      "url": "https://en.wikipedia.org/wiki/Atomic_nucleus",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "structure",
        "name": "Structure",
        "description": "What nuclei are.",
        "rationale": "Nucleons and forces.",
        "layers": [
          {
            "id": "composition",
            "name": "Composition",
            "description": "Protons and neutrons.",
            "findings": [
              {
                "id": "composition-finding",
                "name": "Composition",
                "description": "Composition.",
                "questions": [
                  {
                    "text": "How many protons and neutrons does this nucleus have, and what element and isotope is it?",
                    "kind": "measurement"
                  },
                  {
                    "text": "How large is it?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "forces",
            "name": "Forces",
            "description": "Binding.",
            "findings": [
              {
                "id": "forces-finding",
                "name": "Forces",
                "description": "Binding.",
                "questions": [
                  {
                    "text": "How does the strong force bind the nucleus against electrostatic repulsion?",
                    "kind": "definition"
                  },
                  {
                    "text": "What is binding energy per nucleon, and how does it vary?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "stability",
        "name": "Stability",
        "description": "Decay and stability.",
        "rationale": "Trends explain decay.",
        "layers": [
          {
            "id": "decay",
            "name": "Decay",
            "description": "Radioactive decay.",
            "findings": [
              {
                "id": "decay-finding",
                "name": "Decay",
                "description": "Decay.",
                "questions": [
                  {
                    "text": "Is this nucleus stable, and if not, how does it decay?",
                    "kind": "provenance"
                  },
                  {
                    "text": "What is its half-life?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "models",
            "name": "Models",
            "description": "Nuclear models.",
            "findings": [
              {
                "id": "models-finding",
                "name": "Models",
                "description": "Models.",
                "questions": [
                  {
                    "text": "What do the liquid drop and shell models explain?",
                    "kind": "definition"
                  },
                  {
                    "text": "What are magic numbers?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "reactions",
        "name": "Reactions",
        "description": "Fission and fusion.",
        "rationale": "General level.",
        "layers": [
          {
            "id": "energy",
            "name": "Energy",
            "description": "Energy release.",
            "findings": [
              {
                "id": "energy-finding",
                "name": "Energy",
                "description": "Energy release.",
                "questions": [
                  {
                    "text": "Why do fission and fusion release energy, in general terms?",
                    "kind": "definition"
                  },
                  {
                    "text": "How are they used in power generation and research?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "limits",
            "name": "Limits",
            "description": "Weapons-relevant detail.",
            "findings": [
              {
                "id": "limits-finding",
                "name": "Limits",
                "description": "Limits.",
                "questions": [
                  {
                    "text": "Does the request seek weapons design or enrichment detail?",
                    "kind": "boundary"
                  },
                  {
                    "text": "How should the agent keep to educational content?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "exotic",
        "name": "Exotic",
        "description": "Research frontiers.",
        "rationale": "Unusual nuclei.",
        "layers": [
          {
            "id": "halo",
            "name": "Halo",
            "description": "Halo and hypernuclei.",
            "findings": [
              {
                "id": "halo-finding",
                "name": "Halo",
                "description": "Exotic nuclei.",
                "questions": [
                  {
                    "text": "What are halo nuclei and hypernuclei, and how are they made and studied?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which facilities produce them?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "teach",
            "name": "Teach",
            "description": "Teaching.",
            "findings": [
              {
                "id": "teach-finding",
                "name": "Teach",
                "description": "Teaching.",
                "questions": [
                  {
                    "text": "How can nuclear structure be taught with models and data?",
                    "kind": "action"
                  },
                  {
                    "text": "Which misconceptions arise?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should nuclear reactions be a separate entry?",
    "How should nuclear data tables be linked?",
    "How should safety guidance be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}