Electron Bernstein wave excitation and heating by nonlinear interactions of Laguerre and Hermite Gaussian laser beams in a magnetized plasma

Varma, Ashish; Kumar, Asheel

doi:10.1016/j.ijleo.2020.166212

Cited by 27 publications

(6 citation statements)

References 36 publications

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“…The expression of electron dynamics in clustered plasma, nonlinear ponderomotive force, and heating rate is solved by using the fluid theory. The spatial shape and multiple beams of potential, and heating profile are promising much more electron heating in clustered plasma as compared to previous results [53] of heating in plasma. The plasmon frequency at nanocluster surface plays a crucial role for electron heating mechanism.…”

Section: Discussionmentioning

confidence: 81%

“…Since lasers beat wave drive the space charge field and it might heats the electrons cloud of nanocluster. In our earlier work [53], we have theoretically predicted the theory of heating of electron in plasma embedded with dc magnetic field by the EBW aided laser beat wave. Following the [52,53], one can get the expression of time average heating rate per unit volume as:…”

Section: Anomalous Heating Of Electronsmentioning

confidence: 99%

“…Now further following the [52,53] in order to get the formula of the evolution of electron temperature as: d dt…”

Section: Anomalous Heating Of Electronsmentioning

confidence: 99%

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

Varma¹,

Kumar²

2021

Laser Phys.

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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.

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Section: Discussionmentioning

confidence: 81%

Section: Anomalous Heating Of Electronsmentioning

confidence: 99%

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

Varma¹,

Kumar²

2021

Laser Phys.

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“…Such physical mechanisms can contribute to plasma heating. In References [12][13][14][15] authors reported different mechanisms for EBW excitations in plasma using co-propagating or counter-propagating laser sources in the plasma. These findings explain how the laser-aided excitation of EBW can be useful for plasma heating as well as for tuning the heating rate.…”

Section: Introductionmentioning

confidence: 99%

Oblique Bernstein wave propagation in electron‐ion plasma with electron quantization effects

Hussain

Majeed

Ayub

et al. 2023

Contributions to Plasma Physics

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We have studied the role of electron quantization effects on the dispersion characteristics of the oblique electron Bernstein wave (EBW) in an electron-ion plasma using Vlasov-Poisson model. Our analysis shows that large thermal effects (as compared to quantization effects) give rise to the usual classical results while in the limit of strong magnetic field, the dispersion characteristics changes. The existence of a quantum Bernstein mode has been proposed which appears purely due to the electron quantization effects. The damping of the oblique EBW has also been analyzed in detail and we found that the magnitude of the damping of the wave decreases as we decrease the obliqueness parameter (parallel to perpendicular wavenumber ratio) which agrees with the earlier theoretical and experimental findings. Moreover, the strong quantization effects (ℏΩ e >> 2T) also tend to suppress the damping of EBW which contributes to the stabilization of the waves. The present findings are relevant to the laboratory laser-produced plasmas where strong external magnetic fields exist, and also to the dense astrophysical plasma environments.

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“…High power laser beat waves have sufficient potential to excite and heat the electron Bernstein wave in plasma. In this proposed theory, the nonlinear methods of Hermite-Gaussian and Laguerre-Gaussian laser beam interaction with plasma plays a crucial role as a tuning tool in the excitation mechanism due to the field optimisation [35]. In a similar way, the electron Bernstein wave is excited in collisional nanocluster plasma instead of only magnetized plasma [36].…”

Section: Introductionmentioning

confidence: 99%

Excitation of electron Bernstein waves by beating of two cosh-Gaussian laser beams in a collisional plasma

Kumar

Varma

2021

Laser Phys.

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In this paper, a theoretical study has been proposed for excitation of electron Bernstein waves in collisional plasma with dc magnetic field by nonlinear interactions of two cosh-Gaussian laser beams. The beat wave with frequency ω = (ω 1 − ω 2 ) and wave vector ⃗ k = ⃗ k 1 + ⃗ k 2 , exerts a nonlinear ponderomotive force on electrons. This nonlinear force has the potential to drive the electron Bernstein wave in collisional plasma with dc magnetic field. The convective loss of waves in plasma is also discussed. An analytical formalism is developed for power going into the electron Bernstein wave with respect to total laser power. The variation of normalized potential and power distribution profile as a function of beam direction, normalized beat wave frequency, and normalized collisional frequency is demonstrated to excite Electron Bernstein waves (EBWs) under resonance conditions. The spatial shape of laser beam, optimum laser beam width parameter, decentred parameter, extreme value of electron thermal velocity and cyclotron frequency is proposed for much more excitation. This proposed theory of electron Bernstein wave excitation may be applicable for plasma heating.

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Electron Bernstein wave excitation and heating by nonlinear interactions of Laguerre and Hermite Gaussian laser beams in a magnetized plasma

Cited by 27 publications

References 36 publications

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

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

Oblique Bernstein wave propagation in electron‐ion plasma with electron quantization effects

Excitation of electron Bernstein waves by beating of two cosh-Gaussian laser beams in a collisional plasma

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