Laser spectroscopy of the [Formula: see text], [Formula: see text] transitions in stored and cooled relativistic C[Formula: see text] ions

The [Formula: see text] and [Formula: see text] transitions in Li-like carbon ions stored and cooled at a velocity of [Formula: see text] in the experimental storage ring (ESR) at the GSI Helmholtz Centre in Darmstadt have been investigated in a laser spectroscopy experiment. Resonance wavelengths were obtained using a new continuous-wave UV laser system and a novel extreme UV (XUV) detection system to detect forward emitted fluorescence photons. The results obtained for the two transitions are compared to existing experimental and theoretical data. A discrepancy found in an earlier laser spectroscopy measurement at the ESR with results from plasma spectroscopy and interferometry has been resolved and agreement between experiment and theory is confirmed.

Sirona CEREC Blocs and inCoris

Unfortunately, there is no such thing as a universal material for every application--neither in engineering nor in dentistry. Instead, it is a matter of selecting the right material for each individual case and deploying this material in the appropriate way. For this reason, Sirona Dental Systems has decided to augment the existing product portfolio of its material suppliers (Vita Zahnfabrik and Ivoclar Vivadent) and has launched its own range of ceramics for chairside applications, as well as for the fabrication of crowns and bridges in dental laboratories.