Feng Wen-Tian, Ma Xin-Wen, Zhu Xiao-Long, Zhang Shao-Feng, Liu Hui-Ping, Xu Shen-Yue, Qian Dong-Bin, Li Bin, Yan Shun-Cheng, Zhang Da-Cheng, Meng Ling-Jie, Zhang Peng-Ju. Momentum image of emission electrons in transfer ionization process of slow He2+ colliding on HeJ. Acta Physica Sinica, 2010, 59(12): 8471-8477. DOI: 10.7498/aps.59.8471