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EP: Fachverband Extraterrestrische Physik

EP 4: Poster Session

EP 4.3: Poster

Dienstag, 26. Februar 2013, 11:15–12:45, Poster OG

Monte Carlo studies for ground state configurations of atoms and ions in strong magnetic fields — •Sebastian Boblest, Christoph Schimeczek, Dirk Meyer, and Günter Wunner — 1. Institut für Theoretische Physik, Universität Stuttgart, 70550 Stuttgart

Accurate data of atoms and ions in magnetic fields as they occur on magnetic white dwarfs (MWD) and neutron stars (NS) are an essential requirement for better understanding these extreme objects. We present precise computations of the electronic ground state configurations and energies of atoms and ions in a wide range of magnetic field strengths using the Fixed Phase Diffusion Quantum Monte Carlo Method. We utilize trial functions obtained from Hartree Fock calculations performed using an expansion in a basis of Landau levels. The results from such computations may ultimately be used to uncover the origin of absorption features in the thermal emission spectra of MWD and NS.