FRAGMENTATION OF POSITIVELY CHARGED METAL CLUSTERS IN STABILIZED JELLIUM MODEL WITH SELF-COMPRESSION

摘要

Using the stabilized jellium model with self-compression, we have calculated the dissociation energies and the barrier heights for the binary fragmentations of singly-ionized and doubly-ionized Ag clusters. The results for the singly-ionized clusters show that not all of the clusters are stable against spontaneous decay. However, the decays of doubly-ionized clusters can proceed via two different mechanisms: evaporation and fission. Our results show that fission is the dominant decay process for small clusters whereas for large clusters the evaporation process dominates.