Dielectronic and radiative recombination of lithiumlike gold.

We report the first measurements on radiative and dielectronic recombination (RR and DR) of very highly charged ions at energies E c.m. as low as 0 to 50 eV. Novel techniques were employed at the heavy-ion storage ring ESR to obtain absolute recombination rates of Au 76+ (1s 2 2s). The increase of the RR rate for E c.m. →0 could be recorded and single DR resonances in Au 75 (1s 2 2p 3/2 6l j ) resolved