Dissociative recombination of molecular ions in a storage ring

There are local variations between experiments in different storage rings. Some features remain the same independently of where the experiment is performed. Electron cooling is applied for a few up to tens of seconds by merging a beam of cool electrons with the stored ions in one leg of the ring. Ion storage rings offer several advantages for studies of low-energy electron-ion collisions. A first generation of experiments HeH+ was studied. (Suda)