Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1685152 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2008 | 7 Pages |
Abstract
This work focusses on the production and decay properties of inner-shell vacancies and valence-band excitations induced by swift highly charged ions interacting with amorphous and crystalline Si. High resolution electron spectra have been taken for fast heavy ions at 1.78-5Â MeV/u as well as for electrons of similar velocity incident on atomically clean Si targets of well defined phase. Various Auger-electron structures are analyzed concerning their width, their intensity and exact peak position. All measured peaks show a small shift towards lower energy when the charge of the projectile is increased. This finding is an indication for a nuclear-track potential inside the ion track. A detailed analysis of the Auger-electron spectra for amorphous Si and crystalline Si(1Â 1Â 1) 7Â ÃÂ 7 points to a small but significant phase effect in the short-time dynamics of ion tracks.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
G. Schiwietz, K. Czerski, R. Hellhammer, M. Roth, F. Staufenbiel, R.C. Fadanelli, P.L. Grande,