Collisional effects on the modulational instability of intense laser pulses in magnetoactive plasmas

被引：1
作者：
Niknam, A. R. [1 ]
Barzegar, S. [1 ]
Bokaei, B. [1 ]
Mirzaei, F. Haji [2 ]
Aliakbari, A. [3 ]
机构：
[1] Shahid Beheshti Univ, Laser & Plasma Res Inst, GC, Tehran, Iran
[2] Islamic Azad Univ, Dept Phys, Arak Branch, Arak, Iran
[3] Tafresh Univ, Fac Sci, Dept Phys, Tafresh, Iran
来源：
LASER AND PARTICLE BEAMS | 2015年 / 33卷 / 04期
关键词：
Collision frequency; Instability growth rate; Magnetized plasma; Modulational instability; Perturbation method; SELF-PHASE MODULATION; COMPRESSION; BEAM;
D O I：
10.1017/S0263034615000889
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The modulational instability associated with propagation of an intense laser pulse through a transversely magnetized plasma is investigated in the presence of collisional effects. The source-dependent expansion method for analyzing the wave equation is employed. The dispersion relation is obtained and modulational instability and its growth rate are studied. It is shown that in the absence of collisional effects the modulational instability is restricted to the small wavenumber region and the constant magnetic field reduces the growth rate of the instability. In contrast, in the collisional plasma, there is no upper limit of wavenumber for the existence of modulational instability. In addition, in this case, the growth rate of instability increases as the collision frequency goes up.
引用
收藏
页码：705 / 711
页数：7
相关论文
共 20 条
[1]   Turning point temperature and competition between relativistic and ponderomotive effects in self-focusing of laser beam in plasma [J].
Bokaei, B. ;
Niknam, A. R. ;
Milani, M. R. Jafari .
PHYSICS OF PLASMAS, 2013, 20 (10)
[2]   Modulation instability by intense laser beam in magnetized plasma [J].
Chen, Hua-Ying ;
Liu, San-Qiu ;
Li, Xiao-Qing .
OPTIK, 2011, 122 (07) :599-603
[3]   Self-compression of ultra-short laser pulses down to one optical cycle by filamentation [J].
Couairon, A ;
Biegert, J ;
Hauri, CP ;
Kornelis, W ;
Helbing, FW ;
Keller, U ;
Mysyrowicz, A .
JOURNAL OF MODERN OPTICS, 2006, 53 (1-2) :75-85
[4]   Interaction physics of the fast ignitor concept [J].
Deutsch, C ;
Furukawa, H ;
Mima, K ;
Murakami, M ;
Nishihara, K .
PHYSICAL REVIEW LETTERS, 1996, 77 (12) :2483-2486
[5]   Enhanced Propagation for Relativistic Laser Pulses in Inhomogeneous Plasmas Using Hollow Channels [J].
Fuchs, J. ;
d'Humieres, E. ;
Sentoku, Y. ;
Antici, P. ;
Atzeni, S. ;
Bandulet, H. ;
Depierreux, S. ;
Labaune, C. ;
Schiavi, A. .
PHYSICAL REVIEW LETTERS, 2010, 105 (22)
[6]   Relativistic self-focusing and self-phase modulation of cosh-Gaussian laser beam in magnetoplasma [J].
Gill, Tarsem Singh ;
Kaur, Ravinder ;
Mahajan, Ranju .
LASER AND PARTICLE BEAMS, 2011, 29 (02) :183-191
[7]   MODULATIONAL AND RAMAN INSTABILITIES IN THE RELATIVISTIC REGIME [J].
GUERIN, S ;
LAVAL, G ;
MORA, P ;
ADAM, JC ;
HERON, A ;
BENDIB, A .
PHYSICS OF PLASMAS, 1995, 2 (07) :2807-2814
[8]   Modulation instability of laser pulse in magnetized plasma [J].
Jha, P ;
Kumar, P ;
Raj, G ;
Upadhyaya, AK .
PHYSICS OF PLASMAS, 2005, 12 (12) :1-6
[9]   Harmonie generation of ultraintense laser pulses in underdense plasma [J].
Lin, Hai ;
Chen, Li-Ming ;
Kieffer, J.C. .
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2002, 65 (03) :1-036414
[10]   Self-focusing versus stimulated Brillouin scattering of laser pulses in fused silica [J].
Mauger, S. ;
Berge, L. ;
Skupin, S. .
NEW JOURNAL OF PHYSICS, 2010, 12
12