Potential energy threshold for nano-hillock formation by impact of slow highly charged ions on a CaF2(111) surface
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چکیده
منابع مشابه
Potential energy threshold for nano-hillock formation by impact of slow highly charged ions on a CaF2(111) surface
We investigate the formation of nano-sized hillocks on the (111) surface of CaF2 single crystals by impact of slow highly charged ions. Atomic force microscopy reveals a surprisingly sharp and well-defined threshold of potential energy carried into the collision of about 14 keV for hillock formation. Estimates of the energy density deposited suggest that the threshold is linked to a solid–liqui...
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We discuss the creation of nano-sized protrusions on insulating surfaces using slow highly charged ions. This method holds the promise of forming regular structures on surfaces without inducing defects in deeper lying crystal layers. We find that only projectiles with a potential energy above a critical value are able to create hillocks. Below this threshold no surface modification is observed....
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We present first results on the generation of surface nanostuctures by slow HCI on cleaved CaF2 (111) surfaces. The CaF2 single crystals were irradiated with slow (v 1 a.u.) Xe HCI from the Heidelberg-EBIT. Like for other ionic fluoride single crystals, ion-induced surface structures in CaF2 are known to be stable in atmospheric conditions at room temperature. After irradiation the crystals wer...
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Modification of surface and bulk properties of solids by irradiation with ion beams is a widely used technique with many applications in material science. In this study, we show that nano-hillocks on CaF2 crystal surfaces can be formed by individual impact of medium energy (3 and 5 MeV) highly charged ions (Xe(22+) to Xe(30+)) as well as swift (kinetic energies between 12 and 58 MeV) heavy xeno...
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It has recently been demonstrated that slow (v << 1 a.u.) highly charged ions (HCIs) are able to generate nano-sized hillocks on cleaved CaF2(1 1 1) surfaces. The aim of the present study was to explore whether surface nanostructures can also be formed on other target materials by the impact of slow HCIs. To this purpose, we have irradiated LiF(0 0 1), diamond-like carbon (DLC) and Au(1 1 1) wi...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 2007
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2006.12.142