https://doi.org/10.1140/epjd/e2006-00079-1
Modulational instability of dust acoustic waves in a dusty plasma with nonthermal electrons and ions
1
Department of Mathematics, Siksha Bhabana, Visva-Bharati University, Santiniketan, 731 235, India
2
High Energy Physics Division, Department of Physics, Jadavpur University, Kolkata, 700 032, India
Corresponding author: a asesh_r@yahoo.com
Received:
31
October
2005
Revised:
19
December
2005
Published online:
11
April
2006
Effects of nonadiabaticity of variable dust charge, dust fluid temperature, trapped electrons as well as nonisothermality of ions on the amplitude modulation of dust acoustic waves in an unmagnetized dusty plasma are investigated. A modified nonlinear Schrödinger equation (NLSE) is obtained by the standard reductive perturbation technique and is solved numerically by the split-step Fourier method. The modulational instability and the envelope solitary wave structure are found to be modified somewhat by the effects of nonthermally distributed ions and trapped electrons.
PACS: 52.35.Sb – Solitons; BGK modes / 52.35.Mw – Nonlinear phenomena: waves, wave propagation, and other interactions / 52.30.Ex – Two-fluid and multi-fluid plasmas / 52.35.-g – Waves, oscillations, and instabilities in plasmas and intense beams
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006
