THEORETICAL-STUDY OF ELECTRON-CAPTURE PROCESSES IN THE COLLISION OF THE METASTABLE N5+(1(S)2(S)) MULTICHARGED ION ON A HE TARGET

The potential-energy curves and the radial coupling matrix elements of the (3)SIGMA+ and (3)PI states involved in the collision of the metastable N5+ (1s2s)3S multicharged ion on a helium target have been calculated by means of an ab initio method with configuration interaction. The partial cross sections of capture on the 3l levels have been determined using a semiclassical method and compared with experiment. The transfer-excitation process has been considered.