He, Ne, Ar-bombardment of carbon first wall structures

Petra Träskelin, Kai Nordlund, Juhani Keinonen

    Research output: Contribution to journalConference articleScientificpeer-review

    Abstract

    During device operation of the next generation fusion device, ITER, carbon surfaces will be eroded during bombardments of low-energy hydrogen ions and impurities. The high chemical erosion rates, and co-deposition of tritium, are the main drawbacks of carbon as a plasma-facing material in fusion devices. Detailed knowledge about the evolution of the a-C:H layers and the behavior of sputtered hydrocarbon species is hence important in order to determine the fusion plasma dilution and the growth of hydrocarbon films on fusion device first walls. Cumulative bombardment simulations were performed of helium, neon, argon and hydrogen ions impinging onto a-C:H surfaces by employing reactive hydrocarbon potential models. The simulations were run for a noble gas/hydrogen ratio of 1/10, and at ion energies of 5 and 10 eV. At this ratio we find no significant differences between the sputtering yields of the different noble gas ions. (C) 2004 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
    Volume228
    Issue number1-4
    Pages (from-to)319-324
    Number of pages6
    ISSN0168-583X
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA4 Article in conference proceedings
    EventUnknown host publication - , Netherlands
    Duration: 1 Jan 1800 → …

    Cite this

    @article{27ab6be5f7ea4811b66991d48bbf8652,
    title = "He, Ne, Ar-bombardment of carbon first wall structures",
    abstract = "During device operation of the next generation fusion device, ITER, carbon surfaces will be eroded during bombardments of low-energy hydrogen ions and impurities. The high chemical erosion rates, and co-deposition of tritium, are the main drawbacks of carbon as a plasma-facing material in fusion devices. Detailed knowledge about the evolution of the a-C:H layers and the behavior of sputtered hydrocarbon species is hence important in order to determine the fusion plasma dilution and the growth of hydrocarbon films on fusion device first walls. Cumulative bombardment simulations were performed of helium, neon, argon and hydrogen ions impinging onto a-C:H surfaces by employing reactive hydrocarbon potential models. The simulations were run for a noble gas/hydrogen ratio of 1/10, and at ion energies of 5 and 10 eV. At this ratio we find no significant differences between the sputtering yields of the different noble gas ions. (C) 2004 Elsevier B.V. All rights reserved.",
    author = "Petra Tr{\"a}skelin and Kai Nordlund and Juhani Keinonen",
    note = "Volume: 228 Host publication title: Seventh International Conference on Computer Simulation of Radiation Effects in Solids Proceeding volume:",
    year = "2005",
    doi = "10.1016/j.nimb.2004.10.064",
    language = "English",
    volume = "228",
    pages = "319--324",
    journal = "Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
    issn = "0168-583X",
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    }

    He, Ne, Ar-bombardment of carbon first wall structures. / Träskelin, Petra; Nordlund, Kai; Keinonen, Juhani.

    In: Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, Vol. 228, No. 1-4, 2005, p. 319-324.

    Research output: Contribution to journalConference articleScientificpeer-review

    TY - JOUR

    T1 - He, Ne, Ar-bombardment of carbon first wall structures

    AU - Träskelin, Petra

    AU - Nordlund, Kai

    AU - Keinonen, Juhani

    N1 - Volume: 228 Host publication title: Seventh International Conference on Computer Simulation of Radiation Effects in Solids Proceeding volume:

    PY - 2005

    Y1 - 2005

    N2 - During device operation of the next generation fusion device, ITER, carbon surfaces will be eroded during bombardments of low-energy hydrogen ions and impurities. The high chemical erosion rates, and co-deposition of tritium, are the main drawbacks of carbon as a plasma-facing material in fusion devices. Detailed knowledge about the evolution of the a-C:H layers and the behavior of sputtered hydrocarbon species is hence important in order to determine the fusion plasma dilution and the growth of hydrocarbon films on fusion device first walls. Cumulative bombardment simulations were performed of helium, neon, argon and hydrogen ions impinging onto a-C:H surfaces by employing reactive hydrocarbon potential models. The simulations were run for a noble gas/hydrogen ratio of 1/10, and at ion energies of 5 and 10 eV. At this ratio we find no significant differences between the sputtering yields of the different noble gas ions. (C) 2004 Elsevier B.V. All rights reserved.

    AB - During device operation of the next generation fusion device, ITER, carbon surfaces will be eroded during bombardments of low-energy hydrogen ions and impurities. The high chemical erosion rates, and co-deposition of tritium, are the main drawbacks of carbon as a plasma-facing material in fusion devices. Detailed knowledge about the evolution of the a-C:H layers and the behavior of sputtered hydrocarbon species is hence important in order to determine the fusion plasma dilution and the growth of hydrocarbon films on fusion device first walls. Cumulative bombardment simulations were performed of helium, neon, argon and hydrogen ions impinging onto a-C:H surfaces by employing reactive hydrocarbon potential models. The simulations were run for a noble gas/hydrogen ratio of 1/10, and at ion energies of 5 and 10 eV. At this ratio we find no significant differences between the sputtering yields of the different noble gas ions. (C) 2004 Elsevier B.V. All rights reserved.

    U2 - 10.1016/j.nimb.2004.10.064

    DO - 10.1016/j.nimb.2004.10.064

    M3 - Conference article

    VL - 228

    SP - 319

    EP - 324

    JO - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

    JF - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

    SN - 0168-583X

    IS - 1-4

    ER -