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Solitary waves in dusty plasmas with weak relativistic effects in electrons and ions

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Abstract

Two distinct classes of dust ion acoustic (DIA) solitary waves based on relativistic ions and electrons, dust charge Z d and ion-to-dust mass ratio Q’ = m i /m d are established in this model of multicomponent plasmas. At the increase of mass ratio Q’ due to increase of relativistic ion mass and accumulation of more negative dust charges into the plasma causing decrease of dust mass, relativistic DIA solitons of negative potentials are abundantly observed. Of course, relativistic compressive DIA solitons are also found to exist simultaneously. Further, the decrease of temperature inherent in the speed of light c causes the nonlinear term to be more active that increases the amplitude of the rarefactive solitons and dampens the growth of compressive solitons for relatively low and high mass ratio Q’, respectively. The impact of higher initial streaming of the massive ions is observed to identify the point of maximum dust density N d to yield rarefactive relativistic solitons of maximum amplitude.

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Authors and Affiliations

  1. Department of Mathematics, Gauhati University, Guwahati, Assam, India

    B. C. Kalita

  2. Department of Mathematics, Handique Girls’ College, Guwahati, Assam, India

    M. Choudhury

Authors
  1. B. C. Kalita
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  2. M. Choudhury
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Correspondence to B. C. Kalita.

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Kalita, B.C., Choudhury, M. Solitary waves in dusty plasmas with weak relativistic effects in electrons and ions. Plasma Phys. Rep. 42, 996–1004 (2016). https://doi.org/10.1134/S1063780X16100093

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  • DOI: https://doi.org/10.1134/S1063780X16100093

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