The exploration of the unique properties of stored and cooled beams of highly-charged ions
as provided by heavy-ion storage rings has opened novel and fascinating research …

Electron–ion collisions are among the most important atomic processes in ionized gases.
They comprise elastic scattering, excitation, ionization, and recombination. Theoretical …

We study the formation of Rydberg atoms in expanding plasmas at temperatures of 1–1000
K and densities from 10 5–10 10 cm− 3. Up to 20% of the initially free charges recombine in …

The available atomic data used for interpreting and modeling x-ray observations are
reviewed. The applications for these data can be divided into several levels of detail …

The low-energy C IV dielectronic recombination (DR) rate coefficient associated with 2s→
2p Δ n= 0 excitations of this lithium-like ion has been measured with high-energy resolution …

Dielectronic recombination (DR) of xenonlike W 20+ forming W 19+ has been studied
experimentally at a heavy-ion storage ring. A merged-beams method has been employed for …

A source of ultra-cold magnetically guided DC electron beams with a transmission mode
GaAs-photocathode has been developed. The mA currents and the required stability are …

Dielectronic recombination (DR) rate coefficients for 22 sodium-like ions, between Mg+ and
Xe 43+, forming magnesium-like ions have been calculated as part of the assembly of a …

In the past two decades, the electron–ion merged-beams technique has extensively been
exploited at heavy-ion storage rings equipped with electron coolers for spectroscopic …

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 …