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Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 13: Atomic Systems in External Fields II

A 13.4: Talk

Tuesday, March 3, 2009, 17:45–18:00, VMP 6 HS-B

Hartree-Fock-Roothaan calculations of the photoionization of medium-Z atoms in neutron star magnetic fields — •Peter Diemand, Akin Yildirim, and Günter Wunner — 1. Institut für theoretische Physik, Universität Stuttgart, 70550 Stuttgart

We calculate photoionization cross sections for astrophysically relevant atoms and ions in the range Z=2,...26 at neutron star magnetic field strenghts in different ionization stages. Exact continuum states are determined numerically taking into account the correct boundary conditions. Bound states are calculated by solving the Hartree-Fock-Roothaan equations using finite-element and B-spline techniques. The results are compared with those obtained using Born’s approximation.

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