Laser Spectroscopy of Ions in Storage Rings

There are, however, other interesting experiments that were successful. For instance, in the electron cooler ions and atoms move with nearly equal velocities and form an unusual kind of a plasma. Here laser spectroscopy may help to better understand the physics of highly ionized plasmas [1245]. 

The enhancement factor G, which represents the ratio of induced-to-spontaneous recombinations, depends on the laser wavelength and reaches values of G 50 for the resonance wavelength X = 450.5 nm. 

Further experiments of fundamental interest are precision measurements of transition frequencies of very fast moving ions, allowing tests of special relativity. 

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