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Stuttgart 2012 – scientific programme

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A: Fachverband Atomphysik

A 21: Poster: Precision spectroscopy of atoms and ions

A 21.18: Poster

Tuesday, March 13, 2012, 16:30–19:00, Poster.V

Resonant K-shell hole excitation in highly charged iron ions — •Jan Rudolph1,2, Sven Bernitt1, René Steinbrügge1, and José Crespo López-Urrutia11Max Planck Institut für Kernphysik, Heidelberg — 2Institut für Atom- und Molekülphysik, Universität Gießen

K-shell transitions and especially Kα features are most prominent in active galactic nuclei X-ray spectra. To perform laboratory astrophysics experiments on these processes in iron ions, high fluxes of X-ray photons near 6700eV are required. We used the transportable Heidelberg electron beam ion trap (FLASH-EBIT) to carry out high resolution resonant X-ray scattering measurements on He- and Li-like iron ions at PETRA III, a new 4th generation synchrotron radiation source.
The undulator beam line P01 which is equipped with a double crystal monochromator provided beams of 1013γ s−1 at 6700eV. With a photon beam resolution of 0.1 eV, the natural line width of electric dipole allowed X-ray transitions and their corresponding energies could be determined.

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