[1] Rybicki G B et al 1979 Radiative Processes in
Astrophysics (New York: John Wiley and Sons) chap 6 p 167

[2]Jackson J D 2004 Classical Electrodynamics (Beijing:
Higher Educational Press) chap 14 p 661

[3]Li Z W and Xiao X H 1999 Astrophysics (Beijing:
Higher Educational Press) chap 2 p 35 (in Chinese)

[4]You J H 1998 Radiative Processes in Astrophysics
(Beijing: Science Press) chap 1 p 10 (in Chinese)

[5]Nodvick J S and Saxon D S 1954 Phys. Rev. 96
180

[6]Michel F C 1982 Phys. Rev. Lett. 48 9

[7]Yarwood J et al 1984 Nature 312 742

[8]Williams G P et al 1989 Phys. Rev. Lett. 62 261

[9]Blum E B, Siemann R H and Auston D H 1983 Nucl.
Instrum. Methods Phys. Res. 207 321

[10]Zhu J B et al 2000 Nucl. Instrum. Methods Phys. Res.
A 447 587

[11]Zhu J B et al 2001 High Energy Phys. Nucl. Phys.
25 5 (in Chinese)

[12]Nakazato T et al 1989 Phys. Rev. Lett. 63 12

[13]Ishi K, Shibata Y et al 1991 Phys. Rev. A 43
10

[14]Han J L 2002 Journal of Electrical and Electronic
Teaching 24 5 (in Chinese)

[15]Wang S G 1988 Radio Astronomy Method (Beijing:
Science Press) chap 9 p 221 (in Chinese)

[16]Jin Y M 2001 Electronic Storage Ring Physics (Hefei:
University of Science and Technology of China) chap 7 p 112 (in
Chinese)

[17]Schwinger J 1949 Phys. Rev. 75 12