Nonlinear dynamics of large-amplitude dust acoustic shocks and solitary pulses in dusty plasmas

Padma Shukla, Bengt Eliasson

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Abstract

We present a fully nonlinear theory for dust acoustic (DA) shocks and DA solitary pulses in a strongly coupled dusty plasma, which have been recently observed experimentally by Heinrich et al. [ Phys. Rev. Lett. 103 115002 (2009)], Teng et al. [ Phys. Rev. Lett. 103 245005 (2009)], and Bandyopadhyay et al. [ Phys. Rev. Lett. 101 065006 (2008)]. For this purpose, we use a generalized hydrodynamic model for the strongly coupled dust grains, accounting for arbitrary large-amplitude dust number density compressions and potential distributions associated with fully nonlinear nonstationary DA waves. Time-dependent numerical solutions of our nonlinear model compare favorably well with the recent experimental works (mentioned above) that have reported the formation of large-amplitude nonstationary DA shocks and DA solitary pulses in low-temperature dusty plasma discharges.
Original languageEnglish
Article number046402
Number of pages6
JournalPhysical Review E
Volume86
Issue number4
DOIs
Publication statusPublished - 15 Oct 2012

Keywords

  • dusty plasmas
  • shocks
  • solitary waves
  • nonlinear dynamics
  • large-amplitude
  • solitary pulses

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