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  • effects of double temperature superthermal electrons on dust-ion-acoustic shock waves in electron-positron-ion dusty plasmas

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 867
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a rigorous theoretical investigation on the characteristics of dust-ion-acoustic (dia) shock waves in an unmagnetized multi component electron-positron-ion dusty plasma (consisting of inertial ions, electrons of two distinct temperatures referred to as low and high temperature superthermal electrons where superthermality is introduced via the κ-type of nonthermal distribution, boltzmann distributed positrons, and negatively charged immobile dust grains) has been made both theoretically and analytically. the hydrodynamic equation for inertial ions has been used to derive the burgers equation. the influence of superthermal electrons, maxwellian positrons and ion kinematic viscosity, which are found in this investigation, significantly modify the basic features of dia shock waves, are briefly discussed. the present investigation can be very effective for studying and understanding the basic characteristics of shock wave propagation through different astrophysical situations where distinct temperature superthermal electrons dominate the wave dynamics.

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