Solitary waves and double layers in complex plasma media

A complex plasma medium (containing Cairns nonthermal electron, adiabatically warm inertial ion, and stationary positively charged dust (PCD) species (making a system very complex) is considered. The effects of PCD species, electron adiabatic ion-temperature on ion-acoustic (IA) solitary waves (SWs) double layers (DLs) are investigated by the pseudo-potential approach, which valid for arbitrary amplitude time-independent SWs DLs. It observed that presence reduces phase speed IA waves, consequently supports subsonic compressive in electron-ion-PCD plasmas. On other hand, increase both number or fast electrons causes to reduce possibility formation SWs, thus convert into supersonic ones. after at certain value parameter, with positive negative potentials as well DLs only potential exist. applications work space environments (viz. Earth's mesosphere, cometary tails, Jupiter's magnetosphere, etc.) laboratory devices, where ion along have been observed, briefly discussed.