Rudy Klein

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Exposing pressurized crystals to GeV heavy ions reveals unexpected structural changes. Irradiated at ambient conditions, natural zirconia (ZrO2) transforms from the monoclinic structure to its tetragonal (high-temperature) phase. For this process the required fluence must exceed 5×10 12 ions/cm 2 for Pb and U, and become even significantly higher for(More)
The structure of fractal colloid aggregates formed in both the diffusion-and the reaction-limited regimes is studied by static light scattering experiments. The crossover region of the structure factor of the clusters is measured, and the effects of the finite extent of the fractal structure on the scattering are investigated. The polydispersity of the(More)
We present the first complete infrared spectrum of a molecular cloud core covering the wavelength region from 2.4 up to 200 µm together with a map at 1.3 mm wavelength and near-infrared (NIR) images. The core is located in the northern part of M 17 and shows strong evidence for ongoing star formation. These data are the first step towards a complete(More)
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