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

Petra Träskelin, Kai Nordlund, Juhani Keinonen

    Forskningsoutput: TidskriftsbidragKonferensartikelVetenskapligPeer review

    Sammanfattning

    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.
    Originalspråkengelska
    TidskriftNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
    Volym228
    Utgåva1-4
    Sidor (från-till)319-324
    Antal sidor6
    ISSN0168-583X
    DOI
    StatusPublicerad - 2005
    MoE-publikationstypA4 Artikel i en konferenspublikation
    EvenemangUnknown host publication - , Holland
    Varaktighet: 1 jan 1800 → …

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

    I: Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, Vol. 228, Nr. 1-4, 2005, s. 319-324.

    Forskningsoutput: TidskriftsbidragKonferensartikelVetenskapligPeer 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 -