Florian Budde

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The generation of quasimonoenergetic electron beams, with energies up to 200 MeV, by a laser-plasma accelerator driven in a hydrogen-filled capillary discharge waveguide is investigated. Injection and acceleration of electrons is found to depend sensitively on the delay between the onset of the discharge current and the arrival of the laser pulse. A(More)
A long-term analysis of the chemical industry has revealed that many factors that are thought to increase value actually do not, and delivered interesting insights into the true drivers of value creation. The study shows that the primary driver of value creation in chemical companies is in actual fact the composition of their product portfolios. Strategies(More)
We report annealing studies of thin films of GaN and GaN:O prepared by ion assisted deposition. As-prepared films of stoichiometric tetrahedrally bonded GaN form nanocrystalline networks, but amorphous networks result with the inclusion of more than 10 at.% of oxygen. The annealed nc-GaN films show an increased average crystallite size, though even after a(More)
Amorphous and nanocrystalline group III nitrides can be formed with relative ease in comparison with fully single crystalline material, and they show at least some properties in common with the crystalline form. Here we report experiments with the preparation of these materials, focussing especially on the potential to form patterned films with structures(More)
Summary form only given. We present a review of the research carried out during the past six months by groups from Romania, Victoria University of Wellington, New Zealand, and Universite de Provence, Marseille, France, with the aim to fabricate photonic materials within the framework of the COST ACTION P11. Novel aluminophosphate glasses doped with(More)
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