{
  "id": "1304.4804",
  "version": "v2",
  "published": "2013-04-17T12:57:34.000Z",
  "updated": "2013-04-24T09:10:45.000Z",
  "title": "Rotational quenching of H2CO by molecular hydrogen: cross-sections, rates, pressure broadening",
  "authors": [
    "Laurent Wiesenfeld",
    "Alexandre Faure"
  ],
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We compute the rotational quenching rates of the first 81 rotational levels of ortho- and para-H2CO in collision with ortho- and para-H2, for a temperature range of 10-300 K. We make use of the quantum close-coupling and coupled-states scattering methods combined with the high accuracy potential energy surface of Troscompt et al. (2009a). Rates are significantly different from the scaled rates of H2CO in collision with He; consequently, critical densities are noticeably lower. We compare a full close- coupling computation of pressure broadening cross sections with experimental data and show that our results are compatible with the low temperature measurements of Mengel & De Lucia (2000), for a spin temperature of H2 around 50 K.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-04-24T09:10:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "rotational quenching",
      "molecular hydrogen",
      "high accuracy potential energy surface",
      "cross-sections",
      "pressure broadening cross sections"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/stt616",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2013,
      "month": "Jul",
      "volume": 432,
      "number": 3,
      "pages": 2573
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1228665,
      "adsabs": "2013MNRAS.432.2573W"
    }
  }
}