Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide

doi:10.1088/1674-1056/20/9/094103

中国物理B ›› 2011, Vol. 20 ›› Issue (9): 94103-094103.doi: 10.1088/1674-1056/20/9/094103

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇下一篇

Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide

A. Hasanbeigi¹, H. Mehdian¹, S. Jafari²

(1)Department of Physics and Plasma Research Institute of Tarbiat Moallem University, 49 Dr Mofatteh Avenue, Tehran 15614, Iran; (2)Department of Physics, University of Guilan, Rasht 41335-1914, Iran

收稿日期:2010-09-05 修回日期:2011-02-14 出版日期:2011-09-15 发布日期:2011-09-15

Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide

A. Hasanbeigi^a)^†, H. Mehdian^a), and S. Jafari^b)

^a Department of Physics and Plasma Research Institute of Tarbiat Moallem University, 49 Dr Mofatteh Avenue, Tehran 15614, Iran; ^b Department of Physics, University of Guilan, Rasht 41335-1914, Iran

Received:2010-09-05 Revised:2011-02-14 Online:2011-09-15 Published:2011-09-15

摘要/Abstract

摘要： Amplification of an electromagnetic wave by a free electron laser (FEL) with a helical wiggler and an ion channel with a periodically varying ion density is examined. The relativistic equation of motion for a single electron in the combined wiggler and the periodic ion-channel fields is solved and the classes of possible trajectories in this configuration are discussed. The gain equation for the FEL in the low-gain-per-pass limit is obtained by adding the effect of the periodic ion channel. Numerical calculation is employed to analyse the gain induced by the effects of the non-uniform ion density. The variation of gain with ion-channel density is demonstrated. It is shown that there is a gain enhancement for group I orbits in the presence of a non-uniform ion-channel but not in a uniform one. It is also shown that periodic ion-channel guiding is used to reach the maximum peak gain in a low ion-channel frequency (low ion density).

Abstract: Amplification of an electromagnetic wave by a free electron laser (FEL) with a helical wiggler and an ion channel with a periodically varying ion density is examined. The relativistic equation of motion for a single electron in the combined wiggler and the periodic ion-channel fields is solved and the classes of possible trajectories in this configuration are discussed. The gain equation for the FEL in the low-gain-per-pass limit is obtained by adding the effect of the periodic ion channel. Numerical calculation is employed to analyse the gain induced by the effects of the non-uniform ion density. The variation of gain with ion-channel density is demonstrated. It is shown that there is a gain enhancement for group I orbits in the presence of a non-uniform ion-channel but not in a uniform one. It is also shown that periodic ion-channel guiding is used to reach the maximum peak gain in a low ion-channel frequency (low ion density).

Key words: free electron laser, nonuniform ion-channel, helical wiggler

中图分类号: (Free-electron lasers)

41.60.Cr

52.59.Rz (Free-electron devices) 52.38.-r (Laser-plasma interactions)

A. Hasanbeigi, H. Mehdian, S. Jafari. Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide[J]. 中国物理B, 2011, 20(9): 94103-094103.

A. Hasanbeigi, H. Mehdian, and S. Jafari . Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide[J]. Chin. Phys. B, 2011, 20(9): 94103-094103.

参考文献 19

[1]	Freund H P and Antonsen Jr J M 1996 Principles of Free-Electron Lasers (London: Chapman and Hall)
[2]	Whittum D H, Sessler A M and Dawson J M 1990 Phys. Rev. Lett. 64 2511
[3]	Takayama K and Hiramatsu S 1988 Phys. Rev. A 37 173
[4]	Whittum D H 1992 Phys. Fluids B 4 730
[5]	Mangles S P D, Walton B R, Tzoufras M, Najmudin Z, Clarke R J, Dangor A E, Evans R G, Fritzler S, Gopal A, Hernandez Gomez C, Mori W B, Rozmus W, Tatarakis M, Thomas A G R, Tsung F S, Wei M S and Krushelnick K 2005 Phys. Rev. Lett. 94 245001
[6]	Liu C S, Tripathi V K and Kumar N 2007 Plasma Phys. Controlled Fusion 49 325
[7]	Tzoufras M, Lu W, Tsung F S, Huang C, Mori W B, Katsouleas T, Vieira J, Fonseca R A and Silva L O 2008 Phys. Rev. Lett. 101 145002
[8]	Jackson J D 1975 Classical Electrodynamics (New York: Wiley)
[9]	Wang S Q, Clayton C E, Blue B E, Dodd E S, Marsh K A, Mori W B, Joshi C, Lee S, Muggli P, Katsouleas T, Decker F J, Hogan M J, Iverson R H, Raimondi P, Walz D, Siemann R and Assmann R 2002 Phys. Rev. Lett. 88 135004
[10]	Jha P and Kumar P 1996 IEEE Trans. Plasma Sci. 24 1359
[11]	Mehdian H and Raghavi A 2007 Plasma Phys. Control. Fusion 49 69
[12]	Mehdian H, Hasanbeigi A and Jafari S 2008 Phys. Plasmas 15 73103
[13]	Jha P and Kumar P 1998 Phys. Rev. E 57 2256
[14]	Miller J D and Gilgenbach R M 1987 Phys. Fluids 30 3165
[15]	Adler R J 1982 Part. Accel. 12 39
[16]	Golub Y Y and Rozanov N E 1995 Tech. Phys. 40 346
[17]	Bosch R A and Gilgenbach R M 1988 Phys. Fluids 31 634
[18]	Yariv A 1989 Quantum Electronics 3rd edn. (New York: Wiely) pp. 277—297
[19]	Pakter R and Rizzato F B 2001 Phys. Rev. Lett. 87 044801

Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide

Gain calculation of a free-electron laser operating with a non-uniform ion-channel guide

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 19

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	王超, 徐文, 梅红樱, 秦华, 赵昕念, 温华, 张超, 丁岚, 徐勇, 李鹏, 吴岱, 黎明. Picosecond terahertz pump-probe realized from Chinese terahertz free-electron laser[J]. 中国物理B, 2020, 29(8): 84101-084101.
[2]	F Bazouband, B Maraghechi. Axial magnetic field effect in numerical analysis of high power Cherenkov free electron laser[J]. 中国物理B, 2019, 28(6): 64101-064101.
[3]	Behnam Bahadory. Electric field in two-dimensional complex plasma crystal: Simulated lattices[J]. 中国物理B, 2018, 27(2): 25202-025202.
[4]	何俊, 黄明光, 李现霞, 李海强, 赵磊, 赵建东, 李跃, 赵石雷. Design and development of high linearity millimeter wave traveling-wave tube for satellite communications[J]. 中国物理B, 2015, 24(10): 104102-104102.
[5]	Victor Kulish, Alexander Lysenko, Michael Rombovsky, Vitaliy Koval, Iurii Volk. Plural interactions of space charge wave harmonics during the development of two-stream instability[J]. 中国物理B, 2015, 24(9): 95201-095201.
[6]	S. Saviz, M. Karimi. Effects of self-fields on electron trajectory and gain in planar wiggler free-electron lasers with two-stream and ion-channel guiding[J]. 中国物理B, 2014, 23(3): 34103-034103.
[7]	Saviz S, Lashani E, Ashkarran A. Effects of self-fields on gain in two-stream free electron laser with helical wiggler and an axial guiding magnetic field[J]. 中国物理B, 2014, 23(2): 24102-024102.
[8]	吉驭嫔, 王时建, 徐竟跃, 徐勇根, 刘晓旭, 卢宏, 黄小莉, 张世昌. Effect of normalized plasma frequency on electron phase-space orbits in a free-electron laser[J]. 中国物理B, 2014, 23(2): 24103-024103.
[9]	S. Saviz, H. Rajabalinia. Effects of self-fields on dispersion relation and growth rate in two-stream electromagnetically pumped free electron laser with axial guide magnetic field[J]. 中国物理B, 2013, 22(12): 124101-124101.
[10]	F. Jafari Bahman, B. Maraghechi. Three-dimensional simulation of long-wavelength free-electron lasers with helical wiggler and ion-channel guiding[J]. 中国物理B, 2013, 22(7): 74102-074102.
[11]	A. Hasanbeigi, H. Mehdiank. Dispersion relation and growth rate for a corrugated channel free-electron laser with a helical wiggler pump[J]. 中国物理B, 2013, 22(7): 75205-075205.
[12]	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[J]. 中国物理B, 2012, 21(10): 104104-104104.
[13]	S. Saviz, Z. Rezaei, Farzin M. Aghamir. Gain enhancement in two-stream free electron laser with planar wiggler and axial guide magnetic field[J]. 中国物理B, 2012, 21(9): 94103-094103.
[14]	Maryam Zahedian,B. Maraghechi,M.H. Rouhani. [J]. 中国物理B, 2012, 21(3): 34101-034101.
[15]	S. Saviz, Farzin M. Aghamir, H. Mehdian, M. Ghorannevis. Effects of self-fields on electron trajectory and gain in two-stream electromagnetically pumped free-electron laser with ion channel guiding[J]. 中国物理B, 2011, 20(7): 74101-074101.