We have recorded the dispersed laser-induced fluorescence spectrum of gas-phase C60 ablated from a rotating copper cylinder by 308 nm radiation from a XeCl excimer laser. At vibrational energies below 7000 cm-1 the spectrum consists of three progressions of transitions to the electronic ground state ending on the odd vibrational levels of the lowest frequency t2u mode, with the lowest hu and gu modes as additional origins or on the vibrational levels of the third hg mode with two quanta of the lowest gu mode and the combination hu(1)+gu(1) as the additional origins. At higher vibrational energies, the observed bands become more complex and have yet to be analysed.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|State||Published - 14 Jun 1997|