-
[1]
. Johnson R R, Berkovits D, Boaretto E et al. Nucl. Instrum.Methods, 1994, B92: 483—4882. Freeman S P H T, Beck B, Bierman J M et al. Nucl. In-strum. Methods, 2000, B172: 930—9333. JIANG Shan, HE Ming, DONG Ke-Jun et al. Nucl. In-strum. Methods, 2004, B223/224: 750—7534. Fink D, Middleton R, Klein J et al. Nucl. Instrum. Meth-ods. Phys. Res., 1990, B47: 79—965. Freeman S P H T, Serfass R E, King J C et al. Nucl. In-strum. Methods. Phys. Res., 1995, B99: 557—5616. DONG Ke-Jun, HE Ming, WU Shao-Yong et al. ChinesePhys. Lett., 2004, 21(1): 51—537. YUE Dong-Fang, DONG Ke-Jun, HE Ming et al. Atom.Energy Sci. and Tech., 2004, 38(3): 271—274(in Chinese)(岳东方,董克君,何明等.原子能科学技术,2004, 38(3):271-274)8. WU Shao-Yong, JIANG Shan, DONG Ke-Jun et al. J.Chin. Mass Spectr. Soc., 2002, 23(4): 248—251(in Chinese)(武绍勇,姜山,董克君等.质谱学报,2002, 23(4): 248-251)