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    "# Modeling a Pincell\n",
    "In this module, we'll demonstrate the basic features of the Python API for constructing input files and running OpenMC. In it, we will show how to create a basic reflective pincell model that is equivalent to modeling an infinite array of fuel pins in a pressurized water reactor (PWR). We highly recommend having a copy of the [Python API reference documentation](https://docs.openmc.org/en/stable/pythonapi/index.html) open in another browser tab that you can refer to."
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    "For this example, we'll create a simple pin-cell that is composed of:\n",
    "- UO<sub>2</sub> at 10 g/cm<sup>3</sup>\n",
    "  - U235 at 0.02115 a/o\n",
    "  - U238 at 0.86032 a/o\n",
    "  - O16 at 0.11852 a/o\n",
    "- Zirconium clad at 6.6 g/cm<sup>3</sup>\n",
    "  - Elemental Zr\n",
    "- Water moderator at 1.0 g/cm<sup>3</sup>\n",
    "  - H1 at 2.0 a/o\n",
    "  - O16 at 1.0 a/o\n",
    "\n",
    "The dimensions of our fuel pin will be as follows:\n",
    "- Fuel outer radius = 0.39 cm\n",
    "- Clad inner radius = 0.40 cm\n",
    "- Clad outer radius = 0.46 cm\n",
    "- Fuel pin pitch = 1.26 cm"
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      "/usr/local/Cellar/jupyterlab/3.6.2/libexec/bin/python3.11\n"
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   "id": "140b6b6a-b2ef-4968-bb9a-a22fdfbf5a71",
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   "source": [
    "import openmc"
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