Abstract: PRODUCTION OF ~7BE IN THE REACTIONS INDUCED BY INTERMEDIATE-ENERGY ~(12)C IONSZHAO LILI;LI WENXIN; SUN TONGYU;WU DINGQING SUN RULIN;YIN XINMIN;JING GENMING（Institute of Modern Physics，Academia Sinica，Lanzhou，730000）LI XINHUA；LI ZHE；JING KEXING（China Institute of Atomic Energy， Beijing，102413）ABSTRACT In the reactions of Mylar，natural Cu or ~(93)Nb with ~(12)C ions at bombarding energies up to47 MeV／u，the radioactivity of ~7Be is measured with off-line γ－spectroscopy. The ~7Be isotopeobserved in this work originates from the processes of ~(12)C projectile fragmentation and targetfragmentation，respectively．The yield of ~7Be is estimated to be 1．1×10~7 Bq／μA·h．The pos-sibility of the production for ~7Be and other radioactive nuclides has been discussed by usingintermediate-energy heavy-ion reactions. Key words ~7Be Activity γ-Ray enery spectroscopy