Phys. Rev. Lett. 90, 063401 (2003) [4 pages]Time-Resolved Dynamics of Thermal Isomerization in Cesium-Halide Cluster Anions
We have performed time-resolved studies of the dynamics of thermal isomerization occurring in certain cesium-halide cluster anions. Using a pump-probe technique, we have observed the repopulation of a photodepleted isomer within an ensemble as a function of time by monitoring the photoelectron spectrum. The rates of isomerization increase and the isomer lifetimes decrease as functions of temperature. The clusters undergo a gradual phase transition from solidlike to liquidlike states with liquidlike behavior obtained at ∼500 K, much lower than the bulk melting temperatures of ∼900 K. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.063401
DOI:
10.1103/PhysRevLett.90.063401
PACS:
36.40.Ei, 36.40.Sx
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