Computer simulation studies of Ar clusters

Results of the solid-liquid transition of Ar-13 cluster in a spherically sy mmetric external potential have been presented. The transition temperature is observed to show an elevation with pressure. The broadening of the heat capacity peaks indicate the transition becoming more diffused with pressure . The icosahedral structure of the cluster remains unaltered under pressure . Ar-55 cluster has also been studied by similar approach. A possible conne ction between glass transition phenomenon and melting of clusters under pre ssure has been examined.