A number of implants in silicon have been analysed by SIMS under the N
2+ primary ion bombardment. Results obtained with traditional O2+ and
Cs+ primary beams are presented for comparison. The N2+ primary beam i
s shown to be efficient enough in the depth profiling of B, P, As, F,
Cl, S, Na, K. A significant intensity of the emission of BN- secondary
ions is noted.