IR laser fragmentation of homogeneous (CF₃I)_nclusters and (CF₃I)_nclusters located inside of (Xe)_mlarge clusters or on their surface

Abstract

We have studied the fragmentation of homogeneous (CF I) n 3 clusters ( ≤ n 45 is the average number of molecules per cluster) and of (CF I) n 3 IR mJ cm −2 . Possible reasons why the considered clusters have this fragmentation character are discussed.

Ultrafast Dissociation Dynamics Induced in [Fe(CO)5]nXem Mixed Clusters by Resonant Femtosecond Infrared Laser Radiation

“…This, in particular, refers to mixed clusters of the form of (M) n (X) m , where M is a molecule and X is an atom of a noble gas. The above-said is clearly demonstrated by experiments where the fragmentation of (CF 3 I) n clusters of different types caused by the IR laser radiation of 150 ns pulse duration was studied. It was found that homogeneous (CF 3 I) n clusters ( n = 45 is the average number of molecules in the cluster) and (CF 3 I) n clusters localized inside or on the surface of Xe m clusters ( m = 100 is the average number of xenon atoms in the cluster) have different stabilities with respect to fragmentation and different dependences of the fragmentation efficiency on the energy fluence of the IR radiation.…”

“…The strongest dependence of the fragmentation probability on the energy fluence as well as the fragmentation at the lowest energy fluencies is observed for homogeneous (CF 3 I) n clusters, the weaker dependence was observed for (CF 3 I) n clusters localized inside Xe m clusters, and the weakest dependence was obtained for (CF 3 I) n clusters located on the surface of Xe m clusters. Although no direct detection of the formation of free Xe atoms was performed, it was concluded that the main reason for the higher stability (less efficient fragmentation) of (CF 3 I) n clusters localized inside or on the surface of Xe m clusters is the presence in the (CF 3 I) n clusters of an efficient channel for the relaxation of the absorbed energythe evaporation of xenon atoms.…”