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000139567 0247_ $$2URN$$aurn:nbn:de:0001-2013091802
000139567 0247_ $$2ISSN$$a1868-8489
000139567 0247_ $$2Handle$$a2128/5580
000139567 020__ $$a978-3-89336-901-0
000139567 037__ $$aFZJ-2013-05551
000139567 041__ $$aEnglish
000139567 1001_ $$0P:(DE-Juel1)140128$$aWinkel, Mathias$$b0$$eCorresponding author$$gmale$$ufzj
000139567 245__ $$aHigh-resolution Simulations of Strongly Coupled Coulomb Systems with a Parallel Tree Code$$f2013-07-12
000139567 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2013
000139567 300__ $$axvii, 196 S.
000139567 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1435666995_3091
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000139567 3367_ $$02$$2EndNote$$aThesis
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000139567 3367_ $$2BibTeX$$aPHDTHESIS
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000139567 4900_ $$0PERI:(DE-600)2725208-5$$aSchriften des Forschungszentrums Jülich. IAS Series$$v20
000139567 502__ $$aRWTH Aachen, Diss., 2013$$bDr.$$cRWTH Aachen$$d2013
000139567 520__ $$aDespite intense research, the properties of strongly coupled Coulomb systems have not yet been completely understood. However, with the advent of Free Electron Lasers with wavelengths reaching down to tenths of nanometers and intensities beyond 10$^{16 W}$/cm$^{−2}$ during the last years, it has become possible to experimentally probe the warm dense matter regime up to solid densities. Now, systems that can be studied are reaching from hot, low-density plasmas of fusion research to cold dense solids that are dominated by quantum-mechanical effects and strong correlations. Their consistent theoretical description requires a multitude of effects to be considered. In particular, strong correlations pose significant difficulties here. Computer simulations provide a tool for bridging between experiments and theory as they do not suffer from these complications. The experimentally accessible optical and transport properties in plasmas are primarily featured by the electronic subsystem, such as its collective behavior and interaction with the ionic background, i. e. Coulomb collisions. In this work the collisional behavior of warm dense bulk matter and collective effects in nano plasmas are investigated by means of molecular dynamics simulations. To this end, simulation experiments performed earlier on electronic resonances in metallic nano clusters are extended to significantly larger systems. The observed complex resonance structure is analyzed using a newly introduced spatially resolved spectral diagnostic. As a second field of study, the bulk collision frequency as the key parameter for optical and transport properties in warm dense matter is evaluated in a generalized Drude approach for a hydrogen-like plasma. Here, the combined high-field and strong coupling regime that is only scarcely covered by theoretical models is of primary interest. To solve the underlying N-body problem for both applications, a highly parallel Barnes- Hut tree code is utilized and considerably extended with respect to functionality, versatility, and scalability. With its new excellent scalability to hundred thousands of processors and simulation setups consisting of up to billions of particles and its support for periodic boundary conditions with an efficient and precise real-space approach it delivers highly resolved results and is prepared for further studies on the warm dense matter regime. Here, its unique predictive capabilities can finally be used for connecting to real-world experiments.
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000139567 536__ $$0G:(DE-Juel1)PEPC-FZJ_010102$$aPEPC - Pretty Efficient Parallel Coulomb Solver (PEPC-FZJ_010102)$$cPEPC-FZJ_010102$$x1
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000139567 773__ $$y2013
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000139567 9141_ $$y2013
000139567 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)140128$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000139567 9132_ $$0G:(DE-HGF)POF3-511$$1G:(DE-HGF)POF3-510$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lSupercomputing & Big Data$$vComputational Science and Mathematical Methods$$x0
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