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Origin of atomic clusters during ion sputtering

Rehn, LE, Birtcher, RC, Donnelly, SE, Baldo, PM and Funk, L 2001, 'Origin of atomic clusters during ion sputtering' , Physical Review Letters, 87 (20) , 207601-1-207601-4.

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    Abstract

    Previous studies have shown that the size distributions of small clusters ( n<=40 n = number of atoms/cluster) generated by sputtering obey an inverse power law with an exponent between -8 and -4. Here we report electron microscopy studies of the size distributions of larger clusters ( n>=500) sputtered by high-energy ion impacts. These new measurements also yield an inverse power law, but one with an exponent of -2 and one independent of sputtering yield, indicating that the large clusters are produced when shock waves, generated by subsurface displacement cascades, ablate the surface.

    Item Type: Article
    Themes: Subjects / Themes > Q Science > QC Physics
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
    Journal or Publication Title: Physical Review Letters
    Publisher: American Physical Society
    Refereed: Yes
    ISSN: 00319007
    Related URLs:
    Depositing User: H Kenna
    Date Deposited: 22 Aug 2007 15:42
    Last Modified: 20 Aug 2013 16:46
    URI: http://usir.salford.ac.uk/id/eprint/316

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