Sputtering of Be/C/W compounds in molecular dynamics and ERO simulations

Markus Airila (Corresponding Author), C. Björkas, A. Lasa, A. Meinander, K. Nordlund, K. Vörtler

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    3 Citations (Scopus)

    Abstract

    We have implemented molecular dynamics (MD) generated sputtering data in the Monte Carlo impurity transport code ERO. The data set covers D bombardment of BeC, Be2C, Be2W, W2C and WC that are potentially formed on divertor targets in machines operating with an ITER-like wall. We see that intermediate compounds can have a sputtering yield different from that estimated from a homogeneous mixture, especially in the case of carbide formation with its characteristic strong bonding. At other stoichiometries, grain formation affect the yields. We also observe preferential sputtering of the lighter elements and molecular release. A linear interpolation method is proposed for the evaluation of the sputtering behaviour of any ternary Be/C/W composition.
    Original languageEnglish
    Pages (from-to)S589-S593
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume438
    Issue numberSupplement
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
    Duration: 21 May 201225 May 2012

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    Airila, M., Björkas, C., Lasa, A., Meinander, A., Nordlund, K., & Vörtler, K. (2013). Sputtering of Be/C/W compounds in molecular dynamics and ERO simulations. Journal of Nuclear Materials, 438(Supplement), S589-S593. https://doi.org/10.1016/j.jnucmat.2013.01.123