Inner-shell ionization of lithium-like chromium ions

Inner-Shell Ionization and Fragmentation of Isolated Endohedral Fullerene Ions by XUV Radiation

The photon–ion merged-beams technique for photoabsorption studies of ionized nanoparticles with synchrotron radiation is introduced. As an example, recent results from photoionization and photofragmentation of the endohedral fullerene ions Lu3N@C 80, Lu3N@C 2+ 80 , and Lu3N@C 3+ 80 are briefly discussed, highlighting the sensitivity and versatility of the experimental technique.

Photorecombination Studies of Lithium-Like Uranium Ions

During the last year detailed data analysis of previous photorecombination measurements with Li-like uranium U was performed. Photorecombination (PR) is the capture of a free electron under emission of one or more photons. In the independent processes approximation (IPA) PR usually is described to proceed either via a non-resonant direct pathway, radiative recombination (RR), or as a resonant t...

High-resolution Study of the Lithium Inner-shell Resonances

The resonance region of lithium (58 – 81 eV) was investigated using monochromatized synchrotron radiation and ion time-of-flight (TOF) spectrometry. The photon beam of the PGM undulator beam line passed through the experimental chamber containing vaporized lithium atoms. The lithium ions created were accelerated by a pulsed electric field into the TOF flight tube and detected by a Z-stack of mi...

Two-photon inner-shell ionization in the extreme ultraviolet.

We have observed the simultaneous inner-shell absorption of two extreme-ultraviolet photons by a Xe atom in an experiment performed at the short-wavelength free electron laser facility FLASH. Photoelectron spectroscopy permitted us to unambiguously identify a feature resulting from the ionization of a single electron of the 4d subshell of Xe by two photons each of energy (93±1)  eV. The feature...

Electron-impact ionization for P-like ions forming Si-like ions