[
  {
    "group": "plutonium",
    "name": "hep-239",
    "forge_energy": 33600,
    "heat": 240,
    "criticality": 49,
    "depletion": 229,
    "efficiency": 145,
    "isotopes": [239, 242]
  },
  {
    "group": "plutonium",
    "name": "hep-241",
    "forge_energy": 52800,
    "heat": 420,
    "criticality": 42,
    "depletion": 158,
    "efficiency": 130,
    "isotopes": [241, 242]
  },
  {
    "group": "plutonium",
    "name": "lep-239",
    "forge_energy": 8400,
    "heat": 40,
    "criticality": 99,
    "depletion": 229,
    "efficiency": 150,
    "isotopes": [239, 242]
  },
  {
    "group": "plutonium",
    "name": "lep-241",
    "forge_energy": 13200,
    "heat": 70,
    "criticality": 84,
    "depletion": 158,
    "efficiency": 125,
    "isotopes": [241, 242]
  }
]