coincidence study of double electron emission associated with k-shell photoionization of c60

The (multiple) photoionization and subsequent fragmentation of the c60 molecule was studied with the synchrotron radiation after removing electrons from the inner k-shell. our intention was especially focused on the dynamics of the subsequent fragmentation. in addition to ’normal’ (non-coincident) electron and ion time-of-flight spectroscopy, we investigated this topic with the help of an electron–electron-coincidence measurement. our experiment shows that in these processes c^q+ 60 ions with charge states up to ^3+ and several smaller c^q+ 60-2m fragments are formed. in addition, the broad peak besides the c(1s) line, usually referred to as the 'plasmon' peak, has been observed.