Nonlinear space charge dynamics and modulational instability in the interaction of intense laser pulses with electron-positron plasmas

2017 ◽  
Vol 24 (6) ◽  
pp. 062102 ◽  
Author(s):  
M. Hashemzadeh ◽  
A. R. Niknam
Keyword(s):  
Space Charge ◽  
Modulational Instability ◽  
Laser Pulses ◽  
Intense Laser ◽  
Charge Dynamics ◽  
Intense Laser Pulses ◽  
Electron Positron

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

2015 ◽  
Vol 33 (4) ◽  
pp. 705-711
Author(s):  
A. R. Niknam ◽  
S. Barzegar ◽  
B. Bokaei ◽  
F. Haji Mirzaei ◽  
A. Aliakbari
Keyword(s):  
Growth Rate ◽  
Collision Frequency ◽  
Modulational Instability ◽  
Expansion Method ◽  
Laser Pulses ◽  
Magnetized Plasma ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Intense Laser Pulses ◽  
Wavenumber Region

AbstractThe 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.

Electron-Positron Plasmas Created by Ultra-Intense Laser Pulses Interacting with Solid Targets

2005 ◽  
Vol 298 (1-2) ◽  
pp. 347-355 ◽  
Author(s):  
S. C. Wilks ◽  
H. Chen ◽  
E. Liang ◽  
P. Patel ◽  
D. Price ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Intense Laser ◽  
Intense Laser Pulses ◽  
Electron Positron

Electron-Positron Plasmas Created By Ultra-Intense Laser Pulses Interacting With Solid Targets

2005 ◽  
pp. 347-355
Author(s):  
S.C. Wilks ◽  
H. Chen ◽  
E. Liang ◽  
P. Patel ◽  
D. Price ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Intense Laser ◽  
Intense Laser Pulses ◽  
Electron Positron

Production of electron–positron pairs by intense laser pulses in an overdense plasma

2007 ◽  
Vol 360 (4-5) ◽  
pp. 624-628 ◽  
Author(s):  
V.I. Berezhiani ◽  
D.P. Garuchava ◽  
P.K. Shukla
Keyword(s):  
Laser Pulses ◽  
Intense Laser ◽  
Intense Laser Pulses ◽  
Electron Positron ◽  
Overdense Plasma
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