Scattering processes of a size-selected beam of (C6F6)-n (n = 1-5) from a silicon surface were investigated using a Tandem time-of-flight (TOF) mass spectrometer. Anionic fragments, F- and C6F-5, are produced in the collision of (C6F6)-n at a collision energy in the range of 0-150 eV. The result leads us to conclude that the anionic core of (C6F6)-n is electronically excited upon the surface collision and subsequently dissociates into the fragments. The solvent molecules influence dissociation dynamics of the electronically excited anionic core in low-energy collision.
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