time longer than in previous works, a polymer based on this coalesced structure can be formed. This polymer can be regarded as a p-electron-conjugated system expected to exhibit a metallic property. In this letter, we report about an investigation of the structure of a C60 film irradiated with an EB for 20 h. The radiated film is examined by in situ infrared spectroscopy and the electron transport property of the EB irradiated C60 film is investigated by four-probe measurements using electrolytic ally sharpened tungsten probes that are typically used for scanning tunneling microscopy. Using a four probe, we can extract the sheet resistance of films despite of unknown resistances at the electrical contacts between the probes and the film. Finally, the obtained results are compared with pristine solid C60.