ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Size-resolved benzene–argon clusters, (C6H6)Arn, n=13–40, were generated by supersonic expansion and studied by ultraviolet resonant two-photon ionization spectroscopy through benzene's B2u←A1g601 transition. The size-specific sequence of cluster spectra reveals six features that can be isolated, allowing for an independent analysis of each feature's evolution. In the n=13–40 range, each cluster spectrum is well described by the sum of between two (n=13) and five (n=17–24,26–29) Gaussian features. Only two spectral features (D,E) span the 28-cluster sequence, while each of the other four features appears over a limited consecutive cluster size range (A:n=14–39; B:n=17–29; C:n=14–24; F:n=26–40). The evolution of the spectral shift, width, and relative amplitude is traced for each feature. The observations are rationalized through a model that has been previously developed for the discussion of benzene–argon cluster data. We report for the first time a "high shift" spectral feature, observed at a spectral shift of −80 cm−1, which approaches the bulk shift more closely than anything previously reported. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.476023
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