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Single impact process of a C60 molecule and an argon ciuster on a C60 film is studied by using molecular dynamics simulations in order to investigate the cluster radiation effects ． The C60 molecule impacts on the C60 mm with an aceeleration energy ranging from O ． 1 to 10keV ／ molecule ， and the carbon atoms around the impacレ induced hole show amorphous ・ like binding morpholegy ． The temperature am し md the impact point stays high lbr a remarkably long time due to the low heat conductivity based on the Van der Waals interaction ， and the polymerization also expands in a long time scale ． The argon clus 重 er impact basically results in a similar result except fbr the bigger vo 監 ume of the hole ， which is proportional to the incident energy for both impacts ． Key Words：Molecular Dynamics Method， Carbon， C60 film ， 蓋 on Imdiation Effヒct