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考虑相对论电子束入射等离子体所产生的离子通道的具体结构,利用线性电磁流体力学理论对离子通道摇摆电子束激发的纵向慢波电磁不稳定性进行研究.通过对导出的系统色散关系的数值分析,给出了系统中电磁波、空间电荷波以及两者在一定条件下互作用形成的电磁-静电混合模式的传播特性.研究发现系统在慢波区域存在电磁不稳定性,并揭示此慢波不稳定性是由电子束的betatron振荡所导致,且系统的不稳定性程度与betatron振动频率密切相关.对betatron振荡激发的慢波电磁不稳定性物理机理进行了分析,并给出了不稳定性存在的条件
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关键词:
- 离子通道 /
- betatron振荡 /
- 电磁不稳定性
The slow-wave electromagnetic (EM) instability excited by a relativistic electron beam (REB) injecting plasmas has been studied using linear electromagnetic hydrodynamic (EMHD) theory. The features of multiple waves propagation are presented. The results of numerical calculation prove that the EM instability occurs in slow-wave band. The necessary and sufficient condition of the EM instability has been found. Both analytic discussion and physical analysis reveal that the electron betatron motion is one of important factors for the EM instability. The physical mechanism of the instability driven by the electron betatron motion has been discussed.-
Keywords:
- ion-channel /
- betatron oscillation /
- electromagnetic instability
[1] Whittum D H, Sessler A M, Dawson J M 1990 Phys.Rev.Lett. 64 2511
[2] Chen K R, Katsouleas T C, Dawson J M 1990 IEEE Trans. Plasma Sci. 18 837
[3] Chen K R, Dawson J M 1992 Phys.Rev.Lett. 68 29
[4] Liu P K, Qian S J, Tang C J 1995 Acta Electric Sinica 23 1(in chinese)[刘濮鲲、钱尚介、唐昌建 1995 电子学报23 1]
[5] Tang C J, Liu P K, Liu S G 1996 J. Phys. D: Appl. Phys. 29 90
[6] Tang C J, Gong Y B, Hao B L 2005 Int. J. Electronics 92 489
[7] Wang Z Y, Tang CJ 2006 Acta Phys. Sin. 55 3313 (in Chinese) [王振宇、唐昌建 2006 55 3313]
[8] Goebel D M, Schumacher R W, Hyman J 2007 IEEE MTT-S Digest. 40 511
[9] Bliokh Y P, Nusinovich G S 2001 IEEE Trans. Plasma Sci. 29 951
[10] Mehdian H, Hasanbeigi A, Jafari S 2008 Phys. Plasmas 15 073103
[11] Mehdian H, Abbasi N 2008 Phys. Plasmas 15 013111
[12] Mehdian H, Raghavi A 2007 Plasma Phys. Controlled Fusion 49 69
[13] Mehdian H, Jafari S 2008 J.Plasma.Phys. 74 187
[14] Masoudnia L, Maraghechi B, Mohsenpour T 2009 Phys. Plasmas 16 072108
[15] Bliokh Y P, Nusinovich G S 2006 Phys. Plasmas 13 023102
[16] Bliokh Y P, Nusinovich G S, Carmel Y 2004 Phys. Rev. E 70 046501
[17] Rouhani M H, Maraghechi B 2006 Phys. Plasmas 13 083101
[18] Su D, Tang C J 2009 Phys. Plasmas 16 053101
[19] Chen S Y, Min G, Tang C J 2009 Phys.Plasmas 16 062107
[20] Liu S G, Barker R J, Zhu D 2000 IEEE Trans. Plasma Sci. 28 2135
[21] Wang B, Tang C J, Liu P K 2006 Acta Phys. Sin. 55 5954 (in Chinese)[王 斌、 唐昌建、 刘濮鲲 2006 55 5954]
[22] Liu S G 1980 Introduction to Microwave Electronics (Beijing: Science Press) (in Chinese)[刘盛纲 1980 微波电子学导论 (北京:科学出版社)]
[23] Wang Z Y, Tang C J 2008 Acta Phys. Sin. 57 3313(in Chinese)[王振宇、唐昌建 2008 57 3313]
[24] Rouhani M H, Maraghechi B 2007 Phys.Plasmas 14 029902
[25] Su D, Tang C J, Liu P K 2007 Acta Phys. Sin. 56 2802(in Chinese)[苏 东、 唐昌建、 刘濮鲲 2007 56 2802]
[26] Li H R, Tang C J, Liu P K 2007 J. Phys. D: Appl. Phys. 40 2002
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[1] Whittum D H, Sessler A M, Dawson J M 1990 Phys.Rev.Lett. 64 2511
[2] Chen K R, Katsouleas T C, Dawson J M 1990 IEEE Trans. Plasma Sci. 18 837
[3] Chen K R, Dawson J M 1992 Phys.Rev.Lett. 68 29
[4] Liu P K, Qian S J, Tang C J 1995 Acta Electric Sinica 23 1(in chinese)[刘濮鲲、钱尚介、唐昌建 1995 电子学报23 1]
[5] Tang C J, Liu P K, Liu S G 1996 J. Phys. D: Appl. Phys. 29 90
[6] Tang C J, Gong Y B, Hao B L 2005 Int. J. Electronics 92 489
[7] Wang Z Y, Tang CJ 2006 Acta Phys. Sin. 55 3313 (in Chinese) [王振宇、唐昌建 2006 55 3313]
[8] Goebel D M, Schumacher R W, Hyman J 2007 IEEE MTT-S Digest. 40 511
[9] Bliokh Y P, Nusinovich G S 2001 IEEE Trans. Plasma Sci. 29 951
[10] Mehdian H, Hasanbeigi A, Jafari S 2008 Phys. Plasmas 15 073103
[11] Mehdian H, Abbasi N 2008 Phys. Plasmas 15 013111
[12] Mehdian H, Raghavi A 2007 Plasma Phys. Controlled Fusion 49 69
[13] Mehdian H, Jafari S 2008 J.Plasma.Phys. 74 187
[14] Masoudnia L, Maraghechi B, Mohsenpour T 2009 Phys. Plasmas 16 072108
[15] Bliokh Y P, Nusinovich G S 2006 Phys. Plasmas 13 023102
[16] Bliokh Y P, Nusinovich G S, Carmel Y 2004 Phys. Rev. E 70 046501
[17] Rouhani M H, Maraghechi B 2006 Phys. Plasmas 13 083101
[18] Su D, Tang C J 2009 Phys. Plasmas 16 053101
[19] Chen S Y, Min G, Tang C J 2009 Phys.Plasmas 16 062107
[20] Liu S G, Barker R J, Zhu D 2000 IEEE Trans. Plasma Sci. 28 2135
[21] Wang B, Tang C J, Liu P K 2006 Acta Phys. Sin. 55 5954 (in Chinese)[王 斌、 唐昌建、 刘濮鲲 2006 55 5954]
[22] Liu S G 1980 Introduction to Microwave Electronics (Beijing: Science Press) (in Chinese)[刘盛纲 1980 微波电子学导论 (北京:科学出版社)]
[23] Wang Z Y, Tang C J 2008 Acta Phys. Sin. 57 3313(in Chinese)[王振宇、唐昌建 2008 57 3313]
[24] Rouhani M H, Maraghechi B 2007 Phys.Plasmas 14 029902
[25] Su D, Tang C J, Liu P K 2007 Acta Phys. Sin. 56 2802(in Chinese)[苏 东、 唐昌建、 刘濮鲲 2007 56 2802]
[26] Li H R, Tang C J, Liu P K 2007 J. Phys. D: Appl. Phys. 40 2002
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