Please wait a minute...
Chin. Phys. B, 2012, Vol. 21(10): 104104    DOI: 10.1088/1674-1056/21/10/104104
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

The effects of self-fields on the electron trajectory in a two-stream free electron laser with a helical wiggler and an axial guiding magnetic field

S. Saviza, E. Lashania, Farzin M. Aghamirb
a Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, P.O. Box 14665-678, Iran;
b Department of Physics, University of Tehran, N. Kargar Ave, Tehran 14399, Iran
Abstract  A theory for the two-stream free-electron laser (TSFEL) with a helical wiggler and an axial guide magnetic field is developed. In the analysis, the effects of self-fields are taken into account. An analysis of the two-stream steady-state electron trajectories is given by solving the equation of motion. Numerical calculations show that there are seven groups of orbits in the presence of self-fields instead of two groups reported in the absence of self-fields. The stability of the trajectories is studied numerically.
Keywords:  two-stream free electron laser      electron trajectory  
Received:  06 February 2012      Revised:  01 March 2012      Accepted manuscript online: 
PACS:  41.60.Cr (Free-electron lasers)  
Fund: Project supported by the Plasma Physics Research Center, Science and Research Branch, Islamic Azad University.
Corresponding Authors:  S. Saviz     E-mail:  shahrooz.saviz@srbiau.ac.ir

Cite this article: 

S. Saviz, E. Lashani, Farzin M. Aghamir The effects of self-fields on the electron trajectory in a two-stream free electron laser with a helical wiggler and an axial guiding magnetic field 2012 Chin. Phys. B 21 104104

[1] Freund H P and Antonsen J M 1996 Principles of Free Electron Lasers (London: Chapman and Hall)
[2] Roberson C W and Sprangle P 1989 Phys. Fluids B 1 doi:10.1063/1.859102
[3] Jaber I and Demokan O 1996 Phys. Plasmas 3 4190
[4] Freund H P and Sprangle P 1982 Phys. Rev. A 26 2004
[5] Freund H P, Kehs R A and Granatstein V L 1985 IEEE J. Quantum Electron. 21 1080
[6] Mehdian H, Jafari S and Hasanbeigi H 2008 Phys. Plasmas 15 073102
[7] Chen C P and Davidson R C 1991 Phys. Rev. A 43 5541
[8] Michel L, Bourdier A and Buzzi J M 1991 Nucl. Instrum. Methods Phys. Res. A 304 465
[9] Bourdier A and Michel L 1994 Phys. Rev. E 49 3353
[10] Spindler G and Renz G 1991 Nucl. Instrum. Methods Phys. Res. A 304 492
[11] Freund H P, Jackson R H and Pershing D E 1993 Phys. Fluids B 5 2318
[12] Mirzanejhad S, Maraghechi B and Mohsenpour T 2004 Phys. Plasmas 11 4777
[13] Esmaeilzadeh M, Willett J E and Willett L J 2006 J. Plasma Phys. 72 59
[14] McNeil B W J, Robb G R M and Poole M W 2004 Phys. Rev. E 70 035501(R)
[15] Bekefi G and Jacobs K D 1982 J. Appl. Phys. 53 4113
[16] Mehdian H and Abasi N 2008 Phys. Plasmas 15 013111
[17] Liu W, Yang Z and Liang Z 2006 Int. J. Infrared Millim. Waves 27 1073
[18] Mehdian H and Saviz S 2010 Chin. Phys. B 19 014214
No Suggested Reading articles found!