A nuclear shape parameterization that leads to the formation of three co-linear fragments was used to investigate the ternary fission. The deformation energy was computed within the liquid drop model in the framework of the Yukawa-plus-exponential model. The ternary fission barrier was estimated by taking into account deformation dependent terms as the volume energy, the Coulomb energy, and the surface energy. The trajectory after the scission of the ternary system was computed by solving twelve differential motion equations related to the motion. Finally the penetrability for binary and ternary processes was compared.

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