Origin of atomic clusters during ion sputtering
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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: | 27 Sep 2011 12:30 |
| URI: | http://usir.salford.ac.uk/id/eprint/316 |
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