Comparative Analysis of Double Layer Profiles between Two – Temperature Non-Isothermal and Isothermal Electron Plasmas

Double layers with a non-linear wave structure have been investigated by the well-known Sagdeev pseudopotential method in a plasma consisting of warm positive ions, warm negative ions, warm positrons, and two-temperature non-isothermal and isothermal electrons. In this work, the profiles of double layers from Sagdeev potential functions and double layer solutions for small-amplitude double layers between two-temperature non-isothermal and twotemperature isothermal electron plasmas are studied under a variation of the concentrations of positrons (χ), stream velocities of positive (uio) and negative (ujo) ions, temperatures of positive (σi) and negative (σj) ions, and the concentration of negative ions (njo). The comparative studies of the small-amplitude double layers between two-temperature non-isothermal and two-temperature isothermal electron plasmas show the significant effect of the amplitudes and depth of the potential well. This comparative analysis of double-layer profiles between two-temperature non-isothermal and isothermal electron plasmas explores the differences in double-layer structures in plasma environments with distinct temperature profiles and provides valuable insights that can be applied across various domains in plasma physics.