We propose to install a storage ring at an ISOL-type radioactive beam facility for the first
time. Specifically, we intend to setup the heavy-ion, low-energy ring TSR at the HIE-ISOLDE …

The CHIANTI atomic database provides sets of assessed data that are used for simulating
spectral observations of astrophysical plasmas. This article describes updates that will be …

Collisional processes and details of atomic structure of heavy many-electron atoms and ions
are not yet understood in a fully satisfying manner. Experimental studies are required for …

Every observation of astrophysical objects involving a spectrum requires atomic data for the
interpretation of line fluxes, line ratios, and ionization state of the emitting plasma. One of the …

Two new high-resolution X-ray spectroscopy missions, XRISM and Athena, will observe
deeper and with higher X-ray resolution than ever before possible. Interpreting these new X …

We compiled a set of electron-impact multiple-ionization (EIMI) cross section for
astrophysically relevant ions. EIMIs can have a significant effect on the ionization balance of …

We have calculated electron-impact ionization for ground state and excited states of W 17+
using the flexible atomic code and level-to-level distorted-wave method. Particular attention …

Electron-impact single ionization from levels of the ground configuration of the N+ ion is
presented. Study analyses direct and indirect processes of the ionization. Convergence of …

Astrophysical X-ray spectroscopy promises huge potential scientific returns. The soft X-ray
bandpass, 0.1-10 keV, contains transitions from the K-, L-, and M-shell of every cosmically …

We have calculated cross sections for electron impact ionization (EII) of P-like Fe 11+
forming Si-like Fe 12+. We have used the flexible atomic code (FAC) and a distorted-wave …