%0 Journal Article %T Influence of Non -thermal Electron Parameter on Heavier Masses of Negative Ion Plasma %A Sankar Chattopadhyay %J Sri Lankan Journal of Physics %D 2019 %R 10.4038/sljp.v20i0.8062 %X In presence of non-thermal electrons, theoretical investigations on ion-acoustic solitary waves are made in a collisionless unmagnetized warm plasma consisting of positive and negative ions by the well known pseudopotential technique. The influence of non-thermal electron parameter£¿on heavier masses (Q) of negative ion plasma for Sagdeev potential function, first and second order solitary wave solutions are mainly analysed and discussed here properly %U https://sljp.sljol.info/articles/10.4038/sljp.v20i0.8062/