[Zurück]

F. Aumayr, R. Heller, R.A. Wilhelm, S. Facsko, A.S. El-Said:
"Surface nanostructuring of alkaline-earth fluorides using slow highly charged ions";
Poster: 26th International Conference on Atomic Collisions in Solids (ICACS-26), Debrecen/Hungary; 25.07.2014.

Ion
-
surf
ace interaction is a topic, which attracted a lot interest due to both its
promising applications and the concerned interesting basic phenomena. Recently, slow
highly charged ions (HCI) showed their high effectiveness in creating nanostructures
on various
surfaces [1
-
4]. The formed nanostructures depend highly on the selected
material as well as the type of the used ions. Here we report on the modifications
induced by HCI in BaF
2
and CaF
2
surfaces. Despite the fact that both materials belong to
alkaline
-
ear
th fluorides with the same crystalline structure, their response to HCI
-
Figure 1
.
The near
-
field intensity distributions of the TE mode measured by the end
-
face
coupling
@
633 nm
and the Raman shift
.
T
U
E
S
D
A
Y
Tuesd
ay
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Posters
137
induced nanostructures is different [5, 6]. The observed nanohillocks and etch pits in
both surfaces will be discussed in terms of the dependence on kinetic and potential
energy of the
used HCI. Furthermore, a comparison with the surface modifications by
swift heavy ions (SHI) in both materials is conducted in order to get more insight
toward a better understanding of the formation mechanisms of the nanostructures [7].