Radiative recombination of ions with electrons in cold magnetized plasma

New interpretation of the enhancement effect in the radiative recombination (RR) of bare ions with with cooling electrons in cooler/storage rings is proposed which explains this effect by the transverse collisions with large impact parameter, in the μm range, in the magnetized anisotropic plasma in the electron cooler. The developed simplified approach, called the semiclassical geometrical model (SGM), predicts for a weak magnetic fields the scaling of RR excess rate which agrees with experimental observations. Detailed Monte Carlo simulations of the RR in the magnetized electron-cooler plasma based on the proposed SGM model explains the enhancement observed in ion storage rings in RR experiments.