Absorption spectra of some liquids in the VUV

Absorption spectra and oscillator strengths have been determined for the li quids, benzene, toluene, hexafluorobenzene, tetramethylsilane, 2,2-dimethyl butane, and 2,2,4-trimethylpentane over a spectral range from 120 to 300 nm and compared with gas phase spectra. The effect of condensation manifests itself most obviously for transitions assigned to upper states of relativel y large spatial extent or for transitions with a high spectral density of o scillator strength. Compensating effects, however, appear to mitigate the e ffect of condensation for both hexafluorbenzene and tetramethylsilane.