314 citations · 2.4k across the 62 of their papers we have counts for
5 papers · 1 filter
Optical spectroscopy of complex open 4-shell ions Sn-Sn
F. Torretti, A. Windberger, A. Ryabtsev +8
We analyze the complex level structure of ions with many-valence-electron open [Kr] 4 sub-shells (=7-4) with ab initio calculations based on configuration…
Strong higher-order resonant contributions to x-ray line polarization in hot plasmas
Chintan Shah, Pedro Amaro, Rene Steinbrügge +6
We studied angular distributions of x rays emitted in resonant recombination of highly charged iron and krypton ions, resolving dielectronic, trielectronic, and quadruelectronic ch…
Polarization measurement of dielectronic recombination transitions in highly charged krypton ions
Chintan Shah, Holger Jörg, Sven Bernitt +10
We report linear polarization measurements of x rays emitted due to dielectronic recombination into highly charged krypton ions. The ions in the He-like through O-like charge state…
Analysis of the fine structure of Sn ions by optical spectroscopy in an electron beam ion trap
A. Windberger, F. Torretti, A. Borschevsky +9
We experimentally re-evaluate the fine structure of Sn ions. These ions are essential in bright extreme-ultraviolet (EUV) plasma-light sources for next-generation nan…
A tunable low-drift laser stabilized to an atomic reference
Tobias Leopold, Lisa Schmöger, Stefanie Feuchtenbeiner +6
We present a laser system with a linewidth and long-term frequency stability at the 50 kHz level. It is based on a Ti:Sapphire laser emitting radiation at 882 nm which is reference…