| Popis: |
A technique for measuring the time‐resolved delayed electrons and C+n ions from C60 excited by nanosecond or picosecond laser irradiation is presented. Ions produced well after the laser pulse (delayed ionization) are mainly C+60 with weak signals from large fragments such as C+58, C+56, C+50, and no low‐mass ions are observed. A dominant slow electron (thermal with kT∼0.3 eV) distribution was observed for the excitation of C60 for wavelengths longer than ∼210 nm. These results are discussed in relation to a ‘‘thermionic’’ emission model. |
