Variation in the phase velocity of ion acoustic shock is shown with variation in the positron density (p) at different values of spectral index of positrons, i.e., (bold), 3 (dot), 10 (dash).
Two dimensional ion acoustic shock structure is shown in e-p-i plasmas for plasma parameters and .
Increase in the strength of the shock in e-p-i plasmas with the increase in the positron equilibrium density is shown for and .
Decrease in the strength of the shock with increase in the ion temperature in e-p-i plasmas is shown at plasma parameters and
Increase in the strength of the shock in e-p-i plasmas with increase in the value of positron spectral index is depicted at the value of , and
Enhancement in the strength of the shock is shown at the value of , while the other plasma parameters are in e-p-i plasmas.
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