Search Results - "Wilhelm, R. A"

Defect mediated desorption of the KBr(001) surface induced by single highly charged ion impact by Heller, R, Facsko, S, Wilhelm, R A, Möller, W

“…The individual impacts of slow (300 eV/amu) highly charged Xe ions induce nanometer sized pitlike structures on the KBr (001) surface. The volume of these…”
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Surface modifications of BaF2 and CaF2 single crystals by slow highly charged ions by EL-SAID, A. S, HELLER, R, WILHELM, R. A, FACSKO, S, AUMAYR, F

“…Ion-irradiation of solid surfaces is considered as one of the promising and powerful techniques for material nanostructuring. Recently, slow highly charged…”
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Pit formation on poly(methyl methacrylate) due to ablation induced by individual slow highly charged ion impact by Ritter, R, Wilhelm, R. A, Ginzel, R, Kowarik, G, Heller, R, El-Said, A. S, Papaléo, R. M, Rupp, W, Crespo López-Urrutia, J. R, Ullrich, J, Facsko, S, Aumayr, F

“…We report the formation of nano-sized pits on poly(methyl methacrylate) after exposure to slow highly charged ion beams. The pits are formed on the polymer…”
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Slow highly charged ion induced nanopit formation on the KCl(001) surface by Wilhelm, R. A., Heller, R., Facsko, S.

“…We report on nanostructuring of the KCl(001) surface induced by the individual impact of slow highly charged ions. Samples were irradiated with Xe ions with…”
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Generation of ultrashort ion pulses from ultrafast electron-stimulated desorption by Chirita Mihaila, M. C., Szabo, G. L., Redl, A., Goldberger, M., Niggas, A., Wilhelm, R. A.

“…We present an efficient method to produce laser-triggered proton pulses well below 500 ps pulse width at keV energies. We use femtosecond photoelectron pulses…”
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Sputtering of nanostructured tungsten and comparison to modelling with TRI3DYN by Stadlmayr, R., Szabo, P.S., Mayer, D., Cupak, C., Dittmar, T., Bischoff, L., Möller, S., Rasiński, M., Wilhelm, R.A., Möller, W., Aumayr, F.

“…He-induced nanostructured tungsten (so-called W-fuzz) was bombarded with Ar ions under 60° and the dynamic erosion behaviour was experimentally investigated…”
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Tuning the antiferromagnetic to ferromagnetic phase transition in FeRh thin films by means of low-energy/low fluence ion irradiation by Heidarian, A., Bali, R., Grenzer, J., Wilhelm, R.A., Heller, R., Yildirim, O., Lindner, J., Potzger, K.

“…Ion irradiation induced modifications of the thermomagnetic properties of equiatomic FeRh thin films have been investigated. The application of 20keV Ne+ ions…”
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Modifications of gallium phosphide single crystals using slow highly charged ions and swift heavy ions by El-Said, A.S., Wilhelm, R.A., Heller, R., Akhmadaliev, Sh, Schumann, E., Sorokin, M., Facsko, S., Trautmann, C.

“…GaP single crystals were irradiated with slow highly charged ions (HCI) using 114keV 129Xe(33–40)+ and with various swift heavy ions (SHI) of 30MeV I9+ and…”
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Polarity dependence of Mn incorporation in (Ga,Mn)N superlattices by Tropf, L., Kunert, G., Jakieła, R., Wilhelm, R.A., Figge, S., Grenzer, J., Hommel, D.

“…In the context of recent efforts to combine high Mn concentrations in (Ga,Mn)N with a pronounced p-type carrier density, (Ga,Mn)N/GaN:Mg-superlattices have…”
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A setup for transmission measurements of low energy multiply charged ions through free-standing few atomic layer films by Smejkal, V., Gruber, E., Wilhelm, R.A., Brandl, L., Heller, R., Facsko, S., Aumayr, F.

“…We report the design and testing of a setup for transmission measurements of multiply charged ions through free-standing films with a thickness of a few atomic…”
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Erbium-ion implantation into various crystallographic cuts of Al2O3 by Nekvindova, P., Mackova, A., Malinsky, P., Cajzl, J., Svecova, B., Oswald, J., Wilhelm, R.A.

“…This paper reports on the importance of crystallographic cuts with a different orientation on the luminescent properties and structural changes of Al2O3…”
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A comparison of the structural changes and optical properties of LiNbO3, Al2O3 and ZnO after Er+ ion implantation by Mackova, A., Malinsky, P., Pupikova, H., Nekvindova, P., Cajzl, J., Svecova, B., Oswald, J., Wilhelm, R.A., Kolitsch, A.

“…This paper reports on the structural as well as compositional changes of LiNbO3, Al2O3 and ZnO crystals, implanted with Er+ ions at 190keV a with fluence of…”
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A study of the structural and magnetic properties of ZnO implanted by Gd ions by Macková, A., Malinský, P., Sofer, Z., Šimek, P., Sedmidubský, D., Mikulics, M., Wilhelm, R.A.

“…The structural and magnetic properties of ZnO (0001) single crystals implanted with 200keV Gd ions up to a fluence of 5×1015cm−2 and subsequently annealed at…”
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Surface nanostructuring of LiNbO3 by high-density electronic excitations by El-Said, A.S., Wilhelm, R.A., Facsko, S., Trautmann, C.

“…Lithium niobate (LiNbO3) single crystals were irradiated with high energy gold ions (0.5–2.2GeV) at the UNILAC (GSI) and with 150-keV highly charged xenon ions…”
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Novel aspects on the irradiation of HOPG surfaces with slow highly charged ions by Ritter, R., Shen, Q., Wilhelm, R.A., Heller, R., Ginzel, R., Crespo López-Urrutia, J.R., Facsko, S., Teichert, C., Aumayr, F.

“…As a continuation of our previous work, we present new results regarding the interaction of slow highly charged ions with HOPG. Lateral atomic force microscopy…”
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The structural changes and optical properties of LiNbO3 after Er implantation using high ion fluencies by Macková, A., Malinský, P., Pupíková, H., Nekvindová, P., Cajzl, J., Sofer, Z., Wilhelm, R.A., Kolitsch, A., Oswald, J.

“…The structural and compositional changes of LiNbO3 implanted with 190keV Er+ ions into various crystallographic cuts with fluencies of 1×1016 and 5×1016cm−2…”
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Surface nanostructuring of SrTiO3 single crystals by slow highly charged ions and swift heavy ions by El-Said, A.S., Wilhelm, R.A., Heller, R., Facsko, S., Trautmann, C., Aumayr, F.

“…Single crystals of strontium titanate have been irradiated with both slow highly charged Xe ions extracted from an Electron Beam Ion Trap and swift heavy Xe…”
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Sputter yields of rough surfaces: Importance of the mean surface inclination angle from nano- to microscopic rough regimes by Cupak, C., Szabo, P.S., Biber, H., Stadlmayr, R., Grave, C., Fellinger, M., Brötzner, J., Wilhelm, R.A., Möller, W., Mutzke, A., Moro, M.V., Aumayr, F.

“…The roughness of a surface is known to have a strong influence on the sputtering process. Commonly used 1D Monte Carlo codes for calculating sputter yields…”
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On the question whether surface roughness can explain the absence of a prominent single-collision peak in keV heavy-ion scattering off a polycrystalline Ru surface by Assink, L., Brötzner, J., Cupak, C., Salverda, M., Jonkman, H.T., Versolato, O.O., Wilhelm, R.A., Hoekstra, R.

“…In a joint experimental and modeling effort, we have studied 15 keV Ar2+, Kr2+, and Xe2+ projectiles scattering off a polycrystalline Ru surface to assess the…”
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Graphical user interface for SDTrimSP to simulate sputtering, ion implantation and the dynamic effects of ion irradiation by Szabo, P.S., Weichselbaum, D., Biber, H., Cupak, C., Mutzke, A., Wilhelm, R.A., Aumayr, F.

“…SDTrimSP is a popular simulation program to compute several effects of the interaction between an impinging ion and a solid, such as ion implantation ranges,…”
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