  When energy of colliding nuclei is between 100-600 MeV/nucleon then
multifragmentation take place. By studying the fragments (at final stage of
reaction) we can seize the idea about initial condition and various other
parameter which influence the reaction and vice-versa. The symmetry energy Esym
({\rho}) of nuclear matter characterizes how the energy rises as one move away
from equal numbers of neutrons and protons. Both the magnitude and density
dependence of Esym ({\rho}) are critical for understanding the structure of
rare isotopes and the reaction mechanism of heavy ion collisions but also many
interesting issues in astrophysics.
