ELECTRON-CAPTURE IN SLOW COLLISIONS OF N(3-HYDROGEN() IONS WITH ATOMIC)

State selective total and differential cross sections for charge excha nge collisions between N3+ ions and atomic H have been calculated for incident ion energies ranging from 10 to 1000 eV/amu. Over the whole e nergy range capture to the 3s level of N2+ dominates. The influence of translation effects on both the total and differential cross sections is analysed in detail. Only when translation effects are accounted fo r, is it possible to reproduce the experimental total cross sections f or energies above 100 eV/amu. On the other hand, the position of the m axima and minima in the differential cross sections depend only weakly on translation effects.