Abstract
We have studied collisions between 22.5 keV ions and mixed clusters of and coronene molecules where and range up to about ten. Surprisingly, the cluster fragmentation behavior in distant collisions is dramatically different for pure coronene clusters () and clusters containing a single molecule . In the latter case, the clusters may be ionized without also being fragmented on the experimental time scale of tens of microseconds. This does not occur for pure coronene clusters, but is a main characteristic of pure fullerene clusters. For ion trajectories penetrating the mixed cluster, we observe covalent bond formations between or and , but not between coronene fragments and , or between fragments and coronene. These results are explained by means of classical molecular dynamics simulations of collisions inside the fragmenting mixed clusters.
- Received 29 April 2014
DOI:https://doi.org/10.1103/PhysRevA.90.022713
©2014 American Physical Society