Spectroscopic study of solid benzene and benzene isolated in rare-gas matrices

Abstract

Absorption and luminescence excitation spectra of solid benzene and benzene isolated in rare-gas matrices have been studied. The absolute absorption cross sections of various electronic band systems including the Rydberg region of C 6H 6 are obtained using transmission spectra of C 6H 6-doped rare-gas films of different thickness. An interpretation of the structure in the Rydberg region is given in terms of two Rydberg series using the quantum defect method. A comparative study has been made of luminescence excitation spectra of matrix-isolated and of pure C 6H 6. The luminescence excitation spectra of matrix-isolated benzene gives information on the internal conversion and medium-induced vibrational relaxation.