Electron Bernstein wave aided heating of collisional nanocluster plasma by nonlinear interactions of two super-Gaussian laser beams

Laser Physics ◽  
2021 ◽  
Vol 32 (1) ◽  
pp. 016001
Author(s):  
Ashish Varma ◽  
Asheel Kumar
Keyword(s):  
Resonance Condition ◽  
Plasma Heating ◽  
Beam Width ◽  
Laser Beams ◽  
Analytical Scheme ◽  
Plasmon Frequency ◽  
Good Potential ◽  
Spatial Shape ◽  
Electron Bernstein Wave ◽  
Bernstein Wave

Abstract In this present theoretical study, we investigate electron Bernstein wave (EBW) aided collisional nanocluster plasma heating by nonlinear interaction of two super-Gaussian laser beams. The interactions of laser beams electric field profiles with electronic clouds of nanoclusters cause the beat wave. The nonlinear ponderomotive force is generated through the beat wave. There may be good potential to excite the EBW aiding cluster plasma to lead electron heating via cyclotron damping of the Bernstein wave. An analytical scheme is proposed for the anomalous heating and evolution of electron temperature by using this mechanism. Graphical discussions were promised to achieve extreme heating rate via the spatial shape of super-Gaussian laser beams and the resonance condition of beat wave to surface plasmon frequency. The heating is controlled by tuning the laser beam width, mode index, collisional frequency, clustered radius, and density.

Calculation of coupling to the electron Bernstein wave with a phased waveguide array

2005 ◽  
Vol 47 (2) ◽  
pp. 335-355 ◽  
Author(s):  
R I Pinsker ◽  
M D Carter ◽  
C B Forest ◽  
V A Svidzinski ◽  
P K Chattopadhyay
Keyword(s):  
Waveguide Array ◽  
Electron Bernstein Wave ◽  
Bernstein Wave

scholarly journals Self-Focusing of Hermite-Cosh-Gaussian Laser Beams in Plasma under Density Transition

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Manzoor Ahmad Wani ◽  
Niti Kant
Keyword(s):  
Laser Beam ◽  
Plasma Density ◽  
Focal Spot ◽  
Beam Width ◽  
Spot Size ◽  
Laser Beams ◽  
Equation Approach ◽  
Focal Spot Size ◽  
Self Focusing ◽  
Small Spot

Self-focusing of Hermite-Cosh-Gaussian (HChG) laser beam in plasma under density transition has been discussed here. The field distribution in the medium is expressed in terms of beam-width parameters and decentered parameter. The differential equations for the beam-width parameters are established by a parabolic wave equation approach under paraxial approximation. To overcome the defocusing, localized upward plasma density ramp is considered, so that the laser beam is focused on a small spot size. Plasma density ramp plays an important role in reducing the defocusing effect and maintaining the focal spot size up to several Rayleigh lengths. To discuss the nature of self-focusing, the behaviour of beam-width parameters with dimensionless distance of propagation for various values of decentered parameters is examined by numerical estimates. The results are presented graphically and the effect of plasma density ramp and decentered parameter on self-focusing of the beams has been discussed.

scholarly journals Investigation of electron Bernstein wave (EBW) coupling and its critical dependence on EBW collisional loss in high-β, H-mode ST plasmas

2009 ◽  
Vol 49 (9) ◽  
pp. 095027 ◽  
Author(s):  
S.J. Diem ◽  
G. Taylor ◽  
J.B. Caughman ◽  
P.C. Efthimion ◽  
H. Kugel ◽  
...  
Keyword(s):  
Electron Bernstein Wave ◽  
Bernstein Wave
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