Unexpected reduction of the spin-exchange cross-section for fast 3He+ ions incident on Rb atoms Y. Arimoto, N. Shimakura, K. Yonehara, T. Yamagata and M. Tanaka Eur. Phys. J. D, 8 3 (2000) 305-308 Published online: 15 March 2000 DOI: 10.1007/s100530050040