  This article presents the experimental observations and characterization of
Ion Acoustic Soliton (IAS) in a unique Multi-pole line cusp Plasma Device (MPD)
device in which the magnitude of the pole-cusp magnetic field can be varied.
And by varying the magnitude of the pole-cusp magnetic field, the proportions
of two-electron-temperature components in the filament-produced plasmas of MPD
can be varied. The solitons are experimentally characterized by measuring their
amplitude-width relation and Mach numbers. The nature of the solitons is
further established by making two counter-propagating solitons interact with
each other. Later, the effect of the two-temperature electron population on
soliton amplitude and width is studied by varying the magnitude of the pole
cusp-magnetic field. It has been observed that different proportions of
two-electron-temperature significantly influence the propagation of IAS. The
amplitude of the soliton has been found to be following inversely with the
effective electron temperature (Teff)
