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Laser Optics & Photonics and Atomic & Plasma Science 2018
J u l y 1 6 - 1 7 , 2 0 1 8
P r a g u e , C z e c h R e p u b l i c
Page 100
American Journal of Computer Science and Information Technology
ISSN: 2349-3917
E u r o S c i C o n J o i n t E v e n t o n
Laser Optics & Photonics and
Atomic & Plasma Science
W
e study the modulational instability (MI) of kinetic Alfven waves (KAWs) in an intermediate magnetoplasma. A set of
fluid equations, coupled to the Maxwell's equations are considered to derive a coupled set of nonlinear partial differential
equations (PDEs) which govern the evolution of KAWs in the plasma. We show that the KAWs can evolve into bright envelope
solitons, rogons or can undergo damping depending on whether the characteristic ratio of the Alfven to ion-acoustic speeds
remains above or below a critical value. The growth rate of MI, as well as the frequency shift and the energy transfer rate, are
obtained and analysed. The results can be useful for understanding the existence and formation of bright envelope solitons,
rogons or damping of KAW envelopes in space plasmas, e.g., interplanetary space, solar winds, etc.
apmisra@visva-bharati.ac.in apmisra@gmail.comModulation of kinetic Alfven waves in an
intermediate magnetoplasma
A P Misra and D Chatterjee
Visva-Bharati University, India
Am J Compt Sci Inform Technol 2018, Volume 6
DOI: 10.21767/2349-3917-C1-003