[1] Clinton D V S and Richard N W 1992 Phys. Rev. Lett.
68 3892

[2] Cowgil D F 2005 Fusion Sci. Technol. 48 539

[3] Nagata S, Takahiro K,Yamaguchi S, Yamamoto S, Tsuchiya B
and Naramoto H 1998 Nucl. Instrum. Methods B 136--138
680

[4] Peter B and Dieter S 2001 Nucl. Instrum. Methods B
182 62--66

[5] Cruz S A 2004 Nucl. Instrum. Methods B 222
411--420

[6] Cruz S A, Diaz-Garcia C, Pathak A P and Soullard J 2005
Nucl. Instrum. Methods B 230 46--52

[7] Dehmer J L, Inokuti M and Saxon R P 1975 Phys. Rev.
A 12 102

[8] Oddershede J, Sabin J R 1984 At. Data Nucl. Data
Tables 31 275

[9] Jaskolski W 1996 Phys. Rev. A 271 1

[10] Lindhard J and Scharff M 1961 Phys. Rev.
124(128)

[11] Thwaites D I and Watt D E 1978 Phys. Med. Biol.
23 426

[12] Shi L Q, Liu C Z, Xu S L and Zhou Z Y 2005 Thin
Solid Films 479 52

[13] Stoquert J P and Szorenyi T 2002 Phys. Rev. B
66 144108

[14] Yu H B, Liu S, Hu K Y, Wang L B and Rong L J 2005
Atomic Energy Sci. Technol. 39 530 (in Chinese)