{
  "annotation_id": "5b1efd27-069b-4f33-88a4-b7e98b97eeb4",
  "date_created": "2026-03-02T18:00:53.773000Z",
  "date_modified": "2026-03-02T18:00:53.773000Z",
  "file_hash": "699098a1497bb89dafa48e82b106d55776bdfaa8cc358a6465c16e83924895cf",
  "private": false,
  "record": {
    "abstract": "The optical properties of the `bialkali\u0027 KCsSb and RbCsSb photomultiplier\ncathodes have been experimentally investigated in the visible range. The\nmeasurements carried out include the absolute reflectance at near-normal\nincidence, the polarization-dependent relative reflectance at various angles\nand the change in polarization upon reflection from the photocathode. These\nexperimental inputs have been combined with a theoretical model to determine\nthe complex refractive index of the photocathodes in the wavelength range 380\nto 680 nm and their thickness. As a result of this work, we derive a model\nwhich predicts the fraction of light impinging on a photomultiplier tube that\nis reflected, absorbed or transmitted, as a function of wavelength and angle,\nand dependent on the medium to which the photomultiplier is coupled.",
    "arxiv_id": "physics/0408075",
    "authors": [
      "Dario Motta",
      "Stefan Schoenert"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2004.10.009",
    "journal_ref": "Nucl.Instrum.Meth.A539:217-235,2005",
    "title": "Optical properties of bialkali photocathodes",
    "url": "https://arxiv.org/abs/physics/0408075"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4b6b7003-7a0c-4825-b06c-e2dc8e267fd5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}