[
  {
    "group": "californium",
    "name": "hecf-249",
    "forge_energy": 69120,
    "heat": 696,
    "criticality": 30,
    "depletion": 53,
    "efficiency": 180,
    "isotopes": [249, 252]
  },
  {
    "group": "californium",
    "name": "hecf-251",
    "forge_energy": 72000,
    "heat": 720,
    "criticality": 35,
    "depletion": 100,
    "efficiency": 185,
    "isotopes": [251, 252]
  },
  {
    "group": "californium",
    "name": "lecf-249",
    "forge_energy": 17280,
    "heat": 116,
    "criticality": 60,
    "depletion": 53,
    "efficiency": 175,
    "isotopes": [249, 252]
  },
  {
    "group": "californium",
    "name": "lecf-251",
    "forge_energy": 18000,
    "heat": 120,
    "criticality": 71,
    "depletion": 100,
    "efficiency": 180,
    "isotopes": [251, 252]
  }
]