VIBRATIONAL PREDISSOCATION STUDIES OF $C_{5}(NH_{3})N^{+}$ CLUSTER IONS

Author Institution: School of Chemical Sciences, University of Illinois at UrbanaThe combination of a thermionic emitter and a cw nozzle in a molecular beam apparatus has made possible the production of large, solvated alkali ion clusters. We have produced clusters of the form $M(SOL)^{+}_{N}$ where M is Na, K, Rb, or Cs and SOL can be methanol, ammonia, ethanol, water, ethylene etc, in the size range of $N=1$ to 50. Recently we have produced clusters of $C_{5}(NH_{3})_{N}{^{+}}$ for $N=1$ to 45. Vibrational predissociation spectra of mass selected $C_{8}(NH_{3})_{N}{^{+}}$ have been observed in the $9.6 \mu$ and $10.6\mu$ regions for the clusters of size $N > 9$. The Evaporative Ensemble/RRK analysis of these clusters indicates that the initial energy content for clusters of size $N