{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T20:13:52Z",
    "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": 3,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T10:00:00Z",
      "ingestedAt": "2026-10-06T07:00:47+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:53+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1106",
    "registryId": "vr.tr.xenon",
    "name": "xenon",
    "version": "0.2.0-wave.3",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1106/",
  "model": {
    "registry_id": "vr.tr.xenon",
    "name": "xenon",
    "purpose": "Let an agent explain xenon as an element, relay its properties, isotopes, uses and handling information from reference sources, and separate it from other noble gases and from its compounds.",
    "definition": "A colourless, dense noble gas, chemical element 54, present in trace amounts in the atmosphere and obtained by fractional distillation of liquid air; used in high-intensity lamps, ion propulsion for spacecraft, medical imaging and anaesthesia, and in physics experiments as a detector medium, with many stable and radioactive isotopes.",
    "what_it_is_for": "Lighting, ion propulsion, anaesthesia, imaging and detectors.",
    "affordances": [
      "explain properties and isotopes",
      "explain uses and how it is obtained",
      "relay handling and safety information",
      "distinguish it from other noble gases"
    ],
    "distinguishing_features": [
      "Noble gas, but forms compounds with fluorine and oxygen",
      "Heaviest stable noble gas",
      "Anaesthetic properties",
      "Many isotopes used in research and medicine"
    ],
    "appearance": "Colourless, odourless gas; glows blue in electric discharge.",
    "visual_identification": [
      "Element 54, group 18",
      "Blue glow in discharge lamps",
      "Krypton and radon are neighbouring noble gases"
    ],
    "physical_properties": [
      {
        "quantity": "atomic number",
        "typical_range": "54",
        "unit": "",
        "note": ""
      },
      {
        "quantity": "boiling point",
        "typical_range": "about -108",
        "unit": "degrees C",
        "note": ""
      },
      {
        "quantity": "atmospheric abundance",
        "typical_range": "about 0.09",
        "unit": "parts per million by volume",
        "note": ""
      },
      {
        "quantity": "stable isotopes",
        "typical_range": "7",
        "unit": "isotopes",
        "note": "plus two very long-lived"
      }
    ],
    "families_and_kinds": [
      "xenon gas",
      "xenon isotopes including xenon-133 and xenon-135 in nuclear contexts",
      "xenon compounds such as xenon difluoride",
      "liquid xenon as a detector medium"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "noble gas",
        "why": "group 18 element"
      },
      {
        "relation": "is used in",
        "target": "ion thruster",
        "why": "spacecraft propulsion"
      },
      {
        "relation": "is related to",
        "target": "krypton",
        "why": "the lighter neighbour"
      },
      {
        "relation": "is obtained from",
        "target": "air separation",
        "why": "fractional distillation"
      }
    ],
    "identifiers": [
      {
        "scheme": "chemical symbol",
        "value_or_pattern": "Xe",
        "note": ""
      },
      {
        "scheme": "CAS number",
        "value_or_pattern": "7440-63-3",
        "note": ""
      }
    ],
    "standards_and_regulation": [
      "Compressed gas handling standards",
      "Medical gas regulation for anaesthetic use",
      "Nuclear monitoring of xenon isotopes under the CTBT verification regime"
    ],
    "failure_modes_and_hazards": [
      "Asphyxiation in confined spaces",
      "Anaesthetic effects at high concentration",
      "Supply constraints and price volatility"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Explain xenon's properties, production and uses such as lamps, propulsion and imaging.",
        "Monitor xenon supply and storage for the operator."
      ],
      "must_not": [
        "Encourage inhaling xenon or using it as an anaesthetic outside medical supervision.",
        "Handle pressurised xenon cylinders without proper restraint and ventilation.",
        "Present radioactive xenon isotopes and stable xenon as interchangeable."
      ],
      "requires_human": [
        "Medical use of xenon in imaging or anaesthesia."
      ]
    },
    "ethics": {
      "considerations": [
        "Inhaled gases can displace oxygen and cause asphyxia in enclosed spaces.",
        "Medical uses demand informed consent."
      ],
      "affected_parties": [
        "Workers handling gas",
        "Patients"
      ]
    },
    "owners": {
      "steward": "The person or company that holds it; gas safety and medical regulators set the rules.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1106: xenon",
      "url": "https://www.wikidata.org/wiki/Q1106",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Xenon",
      "url": "https://en.wikipedia.org/wiki/Xenon",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "element",
        "name": "Element",
        "description": "What xenon is.",
        "rationale": "Chemistry.",
        "layers": [
          {
            "id": "properties",
            "name": "Properties",
            "description": "Properties and isotopes.",
            "findings": [
              {
                "id": "properties-finding",
                "name": "Properties",
                "description": "Properties.",
                "questions": [
                  {
                    "text": "What are the physical and chemical properties and isotopes of xenon?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the question about the element, an isotope or a compound?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "production",
            "name": "Production",
            "description": "Production.",
            "findings": [
              {
                "id": "production-finding",
                "name": "Production",
                "description": "Production.",
                "questions": [
                  {
                    "text": "How is xenon obtained, and what are production volumes, with sources?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Which entry fits air separation?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "use",
        "name": "Use",
        "description": "Applications.",
        "rationale": "Uses.",
        "layers": [
          {
            "id": "applications",
            "name": "Applications",
            "description": "Uses.",
            "findings": [
              {
                "id": "applications-finding",
                "name": "Applications",
                "description": "Applications.",
                "questions": [
                  {
                    "text": "How is xenon used in lamps, propulsion, medicine and detectors?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits ion thrusters?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "medical",
            "name": "Medical",
            "description": "Medical uses.",
            "findings": [
              {
                "id": "medical-finding",
                "name": "Medical",
                "description": "Medical.",
                "questions": [
                  {
                    "text": "How is xenon used in anaesthesia and imaging, in general terms?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the user asking about their own treatment, which needs a clinician?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "safety",
        "name": "Safety",
        "description": "Handling.",
        "rationale": "Safety.",
        "layers": [
          {
            "id": "handling",
            "name": "Handling",
            "description": "Handling.",
            "findings": [
              {
                "id": "handling-finding",
                "name": "Handling",
                "description": "Handling.",
                "questions": [
                  {
                    "text": "What handling rules apply to xenon as a compressed gas?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits compressed gas safety?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "monitoring",
            "name": "Monitoring",
            "description": "Radioxenon monitoring.",
            "findings": [
              {
                "id": "monitoring-finding",
                "name": "Monitoring",
                "description": "Monitoring.",
                "questions": [
                  {
                    "text": "How are radioactive xenon isotopes monitored for nuclear test verification, in general terms?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits nuclear test monitoring?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "History and research.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "history",
            "name": "History",
            "description": "Discovery.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "How was xenon discovered, and how were its compounds first made?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "research",
            "name": "Research",
            "description": "Research.",
            "findings": [
              {
                "id": "research-finding",
                "name": "Research",
                "description": "Research.",
                "questions": [
                  {
                    "text": "What research uses xenon, such as dark matter detectors?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits particle detectors?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should xenon isotopes be separate entries?",
    "How should supply data be linked?",
    "The registry entry has merged isotope aliases; should they be split off?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}