{
  "abstract": "Photon induced processing of molecular ices is known to be important in a number of astrophysical environments. However, to date, astrophysical models tend to only incorporate ultra-violet induced photoprocesses. This is despite the fact that the flux of infrared (IR) photons is comparable to, and sometimes exceeds that of, ultra-violet photons in a number of environments. In order to determine whether IR photoprocesses are important under astrophysical conditions, we have undertaken experiments to investigate the IR-induced desorption of CO and N₂ from CO:H2O and N₂:H₂O mixed ices grown at 9 K. These studies were performed at FELIX, the free electron laser facility at Radboud University, Nijmegen, The Netherlands. Irradiation of the ices was performed in the mid-IR range from 2.9–12 µm and shows that photon induced desorption (PID) of CO and N₂ only occurs when the ices are irradiated at wavelengths that excite the vibrational modes of the H₂O ice. No PID is observed when the internal stretching modes of the dopant molecules are excited. The observed PID traces, recorded during the irradiation with a mass spectrometer, can be fitted with a bi-exponential decay function that shows the presence of a fast and a slow photodesorption process. These can be assigned to direct and indirect substrate-mediated resonant photodesorption processes. Power dependence studies show saturation and suggest that a complex process is leading to the observed PID. The data reported here clearly show that IR-driven photodesorption should be considered in astrophysical models.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "name": "Kerry Jones"
    },
    {
      "name": "Jack Fulker"
    },
    {
      "name": "Domantas Laurinavicius"
    },
    {
      "name": "Ali Ozel"
    },
    {
      "name": "Johanna. Schrauwen"
    },
    {
      "name": "Britta Redlich"
    },
    {
      "name": "Jennifer A. Noble"
    },
    {
      "name": "Sergio Ioppolo"
    },
    {
      "name": "Martin Mccoustra"
    },
    {
      "name": "Wendy Brown"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/23v2zsjeyjqsb.bib",
  "cited_by": 0,
  "doi": "10.1039/d5cp04525h",
  "fulltext_url": null,
  "id": "23v2zsjeyjqsb",
  "issns": [
    "1463-9076",
    "1463-9084"
  ],
  "landing_url": "https://hal.science/hal-05850706v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.chim.theo"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "openalex",
      "3103|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W7134258143",
  "pdf_url": "https://hal.science/hal-05850706/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/23v2zsjeyjqsb.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T12:20:53Z",
      "native_id": "hal-05850706",
      "source": "hal",
      "url": "https://hal.science/hal-05850706v1"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "hal:1.phys.astr",
      "subfield": "general"
    },
    {
      "field": "chemistry",
      "origin": "hal:1.chim.theo",
      "subfield": "theoretical"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Infrared free electron laser induced photodesorption of CO and N₂ from solid amorphous water at cryogenic temperatures",
  "title_text": "Infrared free electron laser induced photodesorption of CO and N₂ from solid amorphous water at cryogenic temperatures",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T12:20:12Z",
  "url": "https://research.draconitic.com/paper/23v2zsjeyjqsb",
  "venue": "Physical Chemistry Chemical Physics",
  "versions": []
}