Dust ion acoustic solitary structures in presence of nonthermal electrons and isothermal positrons

作者：Paul Ashesh; Bandyopadhyay Anup^*

来源：Astrophysics and Space Science, 2016, 361(5): 172.

DOI：10.1007/s10509-016-2758-4

• Electron-positron-ion-dust multicomponent plasma
• Nonthermal electrons
• Dust ion acoustic wave
• Energy integral
• Sagdeev pseudopotential
• Solitons
• Double layers
• Supersolitons

Arbitrary amplitude dust ion acoustic solitary structures have been investigated in an unmagnetized collisionless dusty plasma consisting of negatively charged static dust grains, adiabatic warm ions, nonthermal electrons and isothermal positrons. A computational scheme has been developed to draw the qualitatively different existence domains or compositional parameter spaces showing the nature of existence of different solitary structures with respect to any parameter of the present plasma system. The present system supports both positive and negative potential double layers, coexistence of solitary waves of both polarities and positive potential supersolitons.

• 出版日期2016-5