PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Dispersion relation and growth rate for a corrugated channel free-electron laser with a helical wiggler pump |
A. Hasanbeigi, H. Mehdiank |
Department of Physics and Institute for Plasma Research, Kharazmi University, 49 Dr Mofatteh Avenue, Tehran 15614, Iran |
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Abstract The effects of corrugated ion channels on electron trajectories and spatial growth rate for a free-electron laser with a one-dimensional helical wiggler have been investigated. Analysis of the steady-state electron trajectories is performed by solving equations of motion. Our results show that the presence of corrugated channel shifts the resonance frequency to smaller values of ion channel frequency. The sixth-order dispersion equation describing the coupling between the electrostatic beam mode and the electromagnetic mode has also been derived. The characteristic of dispersion relation is analyzed in detail by numerical solution. Results show that the growth rate of instability in the presence of corrugated ion channels can be greatly enhanced relative to the case of an uniform ion channel.
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Received: 09 October 2012
Revised: 04 March 2013
Accepted manuscript online:
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PACS:
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52.59.Rz
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(Free-electron devices)
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41.60.Cr
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(Free-electron lasers)
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52.27.Ny
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(Relativistic plasmas)
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Corresponding Authors:
A. Hasanbeigi
E-mail: hbeigi@tmu.ac.ir
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Cite this article:
A. Hasanbeigi, H. Mehdiank Dispersion relation and growth rate for a corrugated channel free-electron laser with a helical wiggler pump 2013 Chin. Phys. B 22 075205
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[1] |
Takayama K and Hiramatsu S 1988 Phys. Rev. A 37 173
|
[2] |
Jha P and Kumar P 1996 IEEE Trans. Plasma Sci. 24 359
|
[3] |
Jha P and Kumar P 1998 Phys. Rev. E 57 2256
|
[4] |
Su D and Tang C J 2011 Phys. Plasmas 18 023104
|
[5] |
Sadegzadeh S, Hasanbeigi A, Mehdian H and Alimohamadi M 2012 Phys. Plasmas 19 023108
|
[6] |
Seo Y, Tripathi V K and Liu C S 1989 Phys. Fluids B 1 221
|
[7] |
Kurino H, Ebihara K, Hiramatsu S, Kimura Y, Kishiro J, Monaka T, Ozaki T and Takayama K 1990 Part. Accel 31 89
|
[8] |
Mehdian H and Raghavi A 2006 Plasma Phys. Control. Fusion 48 991
|
[9] |
Lee H C and Jiang T F 2010 Phys. Plasmas 17 113109
|
[10] |
Mehdian H, Hasanbeigi A and Jafari S 2010 Phys. Plasmas 17 023112
|
[11] |
Raghavi A, Ninno G D and Mehdian H 2008 Nucl. Instrum. Meth. A 591 338
|
[12] |
Esmaeilzadeh M, Mehdian H and Willett J E 2002 Phys. Rev. E 65 016501
|
[13] |
Jafari B and Maraghechi B 2012 Phys. Plasmas 19 013107
|
[14] |
Zhen Y W, Tang C J and Peng X D 2010 Phys. Plasmas 17 083114
|
[15] |
Miller J D and Gilgenbach R M 1987 Phys. Fluids 30 3165
|
[16] |
Bosch R A and Gilgenbach R M 1988 Phys. Fluids 31 634
|
[17] |
Golub Y Y and Rozanov N E 1995 Tech. Phys. 40 346
|
[18] |
Hasanbeigi A, Mehdian H and Jafari S 2011 Chin. Phys. B 20 094103
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