Hostname: page-component-5c6d5d7d68-vt8vv Total loading time: 0.001 Render date: 2024-08-22T20:09:34.180Z Has data issue: false hasContentIssue false
  • English
  • Français

Saturation mechanism in a two-stream free-electron laser

Published online by Cambridge University Press:  17 December 2015

N. Mahdizadeh
N. Mahdizadeh*
Affiliation:
Department of Physics, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran
*
†Email address for correspondence: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

The effect of a guide field on the saturation mechanism in a two-stream free-electron laser (FEL) is verified. Two monoenergetic electron beams with a vanishing pitch-angle spread are considered. Nonlinear wave–particle interaction is described by a set of coupled differential equations in a 1-D approximation. Output power is presented as a function of the axial distance. It was found that through using a focusing mechanism, the two-stream FEL reached the saturation regime in a shorter axial distance in comparison with the case of no focusing mechanism.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 6 , December 2015 , 905810612
Copyright
© Cambridge University Press 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Aghamir, F. M. & Mahdizadeh, N. 2012 Effects of beam temperature and density variation on the growth rate of a two-stream free electron laser. Phys. Plasmas 19, 032114.CrossRefGoogle Scholar
Bekefi, G. & Jacobs, K. D. 1982 Two-stream free electron laser. J. Appl. Phys. 53, 4113–4121.Google Scholar
Botton, M. & Ron, A. 1990 Two-stream instability in free electron lasers. J. Appl. Phys. 67 (10), 6583–6586.Google Scholar
Freund, H. P. 1983 Nonlinear analysis of free-electron-laser amplifiers with axial guide fields. Phys. Rev. A 27, 4.CrossRefGoogle Scholar
Freund, H. P. Jr & Antonsen, T. M. 1996 Principles of Free Electron Laser. p. 162. Chapman & Hall.Google Scholar
Kulish, V. V., Lysenko, A. V. & Savechenko, V. I. 2003 Two-stream free electron lasers: general properties. Intl J. Infrared Millimeter Waves 24, 129–172.CrossRefGoogle Scholar
Liu, W., Yang, Z. & Liang, Z. 2006 Instability of two-stream free-electron laser with an axial guiding magnetic field. Int. J. Infrared Millimeter Waves 27, 1073–1085.Google Scholar
Mahdizadeh, N. & Aghamir, F. M. 2012 Effect of two-stream instability on the saturation mechanism of a two-stream free electron laser with a helical wiggler pump. Nucl. Instrum. Meth. Phys. Res. A 688, 51–54.CrossRefGoogle Scholar
Mcneil, B. W. J., Robb, G. R. M. & Poole, M. W. 2004 Two-beam free-electron laser. Phys. Rev. E 70, 035501(R).Google Scholar
Mehdian, H., Saviz, S. & Hasanbeigi, A. 2008 Two-stream instability in free electron lasers with a planar wiggler and an axial guide magnetic field. Phys. Plasmas 15, 043103.Google Scholar
Mirian, N. S. & Maraghechi, B. 2013 Thermal effect on prebunched two-beam free electron laser. Phys. Plasmas 20, 083102.Google Scholar
Raghavi, A., De Ninno, G. & Mehdian, H. 2008 Effects of ion-channel guiding on the saturation of a single-pass free-electron laser. Nucl. Instrum. Meth. Phys. Res. A 591, 338.Google Scholar
Roberson, C. W. & Sprangle, P. 1989 A review of free-electron lasers. Phys. Fluids B 1, 3.Google Scholar
Rouhani, M. H & Maraghechi, B. 2010 Three-dimensional simulation of harmonic up-conversion in a prebunched two-beam free-electron laser. Phys. Rev. Special Topics - Accelerators Beams 13, 080706.CrossRefGoogle Scholar
Rouhani, M. H., Maraghechi, B. & Saberi, H. 2009 Efficiency enhancement of a two-beam free-electron laser. Phys. Plasmas 16, 123105.Google Scholar
Sprangle, P., Tang, C.-M. & Manheimer, W. M. 1980 Nonlinear theory of free-electron lasers and efficiency enhancement. Phys. Rev. A 21, 1.Google Scholar