| Autor: |
Reif, J., Fallgren, H., Nielsen, H. B., Matthias, E. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 10/13/1986, Vol. 49 Issue 15, p930, 3p |
| Abstrakt: |
Laser-induced sputtering from the (111) surface of BaF2 was investigated under ultrahigh vacuum conditions, applying fluences well below the macroscopic damage threshold. Measurement of the wavelength-dependent desorption of Ba+ indicates that Ba+ is emitted from two chemically different surroundings at the surface. For a fixed wavelength, the emission rates of Ba+ and F+ as functions of time show a distinct anticorrelation, confirming the existence of two different chemical states of the surface, and suggesting that the sputtering takes place layer by layer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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