Obliquely Propagating Electron Acoustic Shock Waves in Magnetized Plasma

Brazilian Journal of Physics - Tập 48 - Trang 597-603 - 2018
Sona Bansal1,2, Munish Aggarwal3, Tarsem Singh Gill4
1I.K.Gujral Punjab Technical University, Kapurthala, India
2Sikh National College, Banga, India
3Department of Applied Science, Lyallpur Khalsa College of Engineering, Jalandhar, India
4Department of Physics, Guru Nanak Dev University, Amritsar, India

Tóm tắt

Obliquely propagating electron acoustic shock waves in plasma with stationary ions, cold and superthermal hot electrons are investigated in magnetized plasma. Employing reductive perturbation method, Korteweg-de Vries-Burgers equation (KdVB) is derived in the small amplitude approximation limit. The analytical and numerical calculations of the KdVB equation show the variation of shock waves structure (amplitude, velocity, and width) with different plasma parameters. Particle density (α), superthermal parameter (κ), electron temperature ratio (𝜃), kinetic viscosity (η0), obliqueness (kz), and strength of magnetic field (ωc) significantly modify the properties of the shock waves structures. The present investigation is useful to understand dissipative structures observed in space or laboratory plasma where multielectrons population with superthermal electrons are prevalent.

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