The research progresses on the investigations of atomic structure and collision dynamics
with highly charged ions based on the heavy ion storage rings and electron ion beam traps …

Interaction of highly charged heavy ions with electrons is one of the most important atomic
processes in high temperature plasmas, including astrophysical plasmas such as solar …

We experimentally show that the 1 s 2 2 s 2 2 p 1/2-1 s 2 s 2 2 p 1/2 2 transition in Pb 77+
emitted in dielectronic recombination of Pb 78+ is strongly polarized, although it is an …

For more than 40 years, most astrophysical observations and laboratory studies of two key
soft x-ray diagnostic 2 p-3 d transitions, 3 C and 3 D, in Fe XVII ions found oscillator strength …

The reported observations of an unidentified X-ray line feature at∼ 3.5 keV have driven a
lively discussion about its possible dark matter origin. Motivated by this, we have measured …

Extreme-ultraviolet (EUV) spectra of Sn 13+− Sn 15+ ions have been measured in an
electron-beam ion trap (EBIT). A matrix inversion method is employed to unravel convoluted …

A most general density-matrix formalism is presented to investigate linear polarization of
characteristic lines following electron-impact excitation of atoms or ions with arbitrary …

We analyze the complex level structure of ions with many-valence-electron open-[Kr] 4 dm
subshells (m= 7–4) with ab initio calculations based on configuration-interaction many-body …

We determined relative X-ray photon emission cross sections in Fe xvii ions that were mono-
energetically excited in an electron beam ion trap. Line formation for the 3s (3s− 2p) and 3d …

The Hitomi results for the Perseus cluster have shown that accurate atomic models are
essential to the success of X-ray spectroscopic missions and just as important as the store of …