• [1]

    . LI Quan-Feng, WU Ying-Ying, HUANG Wei-Ling. J. Ts-inghua Univ(SciTech), 2004, 44(3): 304—306(in Chinese)(李泉风,吴莹英,黄蔚玲.清华大学学报,2004, 44(3): 304-306)2. Nordell B, Brahme A. Phys. Med. Biol., 1984, 29(7): 797—8103. SHI Jiang-Jun, QIAN Min-Quan. High Power Laser and Particle Beams, 1992, 4(1): 119—126(in Chinese)(施将君,钱民权.强激光与粒子束,1992, 4(1): 119-126)