{
  "annotation_id": "13746ece-953e-421d-a3c9-6a4d90fab132",
  "date_created": "2026-03-02T18:01:11.040000Z",
  "date_modified": "2026-03-02T18:01:11.040000Z",
  "file_hash": "aa58fa1591ec7b81056af4722eca8d829fa3d7064b6d6bf69bafd3f413af2d9c",
  "private": false,
  "record": {
    "abstract": "We present a Photon-Assisted Cascaded Electron Multipliers (PACEM) which has\na potential for ion back-flow blocking in gaseous radiation detectors: the\navalanche from a first multiplication stage propagates to the successive one\nvia its photons, which in turn induce photoelectron emission from a\nphotocathode deposited on the second multiplier stage; the multiplication\nprocess may further continue via electron-avalanche propagation. The\nphoton-mediated stage allows, by a proper choice of geometry and fields,\ncomplete blocking of the ion back-flow into the first element; thus, only ions\nfrom the latter will flow back to the drift region. The PACEM concept was\nvalidated in a double-MHSP (Micro-Hole \u0026 Strip Plate) cascaded multiplier\noperated in xenon, where the intermediate scintillation stage provided optical\ngain of ~60. The double-MHSP detector had a total gain above 10^4 and energy\nresolution of 18% FWHM for 5.9 keV x-rays.",
    "arxiv_id": "physics/0606209",
    "authors": [
      "J. F. C. A. Veloso",
      "F. D. Amaro",
      "J. M. F. dos Santos",
      "A. Breskin",
      "A. Lyashenko",
      "R. Chechik"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1088/1748-0221/1/08/P08003",
    "journal_ref": "JINST1:P08003,2006",
    "title": "The Photon-Assisted Cascaded Electron Multiplier: a Concept for   Potential Avalanche-Ion Blocking",
    "url": "https://arxiv.org/abs/physics/0606209"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "895daf25-25d2-4cf3-ad7e-e567cac3983b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}