[1] Raj D 1991 Phys. Lett. A 160 571

[2] Liu Y F, Shi D H, Sun J F, Zhu Z L and Yang X D 2005
Commun. Theor. Phys. 43 309

[3] Shi D H, Zhu Z L, Sun J F, Yang X D, Liu Y F and Zhao Y 2004
Chin. Phys. Lett. 21 474

[4] Bobeldijk M, van der Zande W J and Kistemaker P G 1994
Chem. Phys. 179 125

[5] Deutsch H, Becker K and Mark T D 1997
Int. J. Mass Spectrom. Ion Processes 167/168 503

[6] Joshipura K N and Patel P M 1996 J. Phys. B 29 3925

[7] Zecca A, Melissa R, Brusa R S and Karwasz G P 1999 Phys.
Lett. A 257 75

[8] Antony B K, Joshipura K N and Mason N J 2005 J. Phys. B
38 189

[9] Jiang Y H, Sun J F, Wan L D 2000 Phys. Rev. A 62 062712

[10] Lide D R 1994 CRC Handbook of Chemistry and Physics, 74th edn
(Boca Raton, FL: Chemical Rubber Company)

[11] Karwasz G P, Brusa S A, Gasparoli A and Zecca A 1993
Chem. Phys. Lett. 211 529

[12] Zecca A, Karwasz G P and Brusa S A 1996 Rivista del
Nuovo Cimento 19 1

[13] Zecca A, Karwasz G P and Brusa S A 1996 28th
European Group Atomic Spectr. Conf. (Graz, Austria, Europhys.
Conf. Abstracts) D 20 302

[14] Szmytkowski C, Zecca A, Karwasz G, Oss S, Maciag K,
Marinkovic B, Brusa R S and Grisenti R 1987 J. Phys. B 20 5817

[15] Kwan Ch K, Hsieh Y -F, Kauppila W E, Smith S J, Stein T S and
Uddin M N 1983 Phys. Rev. A 27 1328

[16] Xing S L, Yu C Q, Shi Q C, Zhang F, Yao L Q, Ma T Q and Xu K Z
1997 J. At. Mol. Phys. 14 294

[17] Garc\'{\ia G and Manero F 1996 Phys. Rev. A 53 250

[18] Jain A and Baluja K L 1992 Phys. Rev. A 45 202

[19] Blanco F and Garc\'{\ia G 2003 Phys. Lett. A 317 458

[20] Garc\'{\ia G and Manero F 1997 Chem. Phys. Lett. 280 419

[21] Jiang Y H, Sun J F and Wan L D 1997 Phys. Lett. A 237 53

[22] Joshipura N and Patel P M 1994 Z. Phys. D 29 269

[23] Ariyasinghe W M and Powers D 2002 Phys. Rev. A 66
052716

[24] Xing S L, Shi Q C, Chen X J, Xu K Z, Yang B X, Wu S L and
Feng R F 1995 Phys. Rev. A 51 414

[25] Sueoka O and Mori S 1989 J. Phys. B 22 963

[26] Vinodkumar M, Joshipura K N, Limbachiya C G and Antony B K 2006
Eur. Phys. J. D 37 67

[27] Jiang Y H, Sun J F and Wan L D 1997 J. Phys. B 30 5025

[28] Joshipura K N and Vinodkumar M 1999 Eur. Phys. J. D
5 229

[29] Sueoka O, Makochekanwa C, Tanino H and Kimura M 2005
Phys. Rev. A 72 042705

[30] Sueoka O, Makochekanwa C and Kimura M 2006 Eur. Phys.
J. D 37 377