Sprecher
Beschreibung
The vacuum-ultraviolet to extreme-ultraviolet (VUV–EUV) variable-line-spacing (VLS) grating
spectrometer being installed at the gas-jet target of CRYRING is a new set-up for photon spectroscopy of
ion-atom collisions. The setup enables detection of fluorescence (roughly 4–40 eV) from collision induced
excitation, charge exchange, and multiple ionization of atoms and molecules by highly charged ions.
Therefore, it provides state and charge resolved access to electron correlation effects in the target and
projectile subsystems. The talk will first summarize the present status of the spectrometer, including lessons
learnt from last beam time as well as new updates and and challenges to install it with new CARME
interaction chamber. Finally, I shall discuss the prospects, such as coincidence measurements between
charged projectile ions and target photons, operation at other ring locations (e.g. the electron target and
laser ion interaction setups), and the broader scientific opportunities this unique spectrometer opens for
precision studies of electron correlation, relativistic, and QED effects in highly charged ions at FAIR.
