Ionization and fragmentation of the DNA base thymine upon interaction with keV Cq+ ions (q = 1 - 6) has been studied. By means of time-of-flight spectrometry of two or more thymine fragments in coincidence with an ejected electron we could investigate particular dissociation channels by means of their associated kinetic-energy-release. The fragmentation dynamics are strongly influenced by the Cq+ charge state: for low q values mainly fragmentation due to direct collisions is observed. With increasing q, electron capture becomes more important. For larger q we could identify several Coulomb explosion channels, leading to very energetic fragments.
|Tijdschrift||European Physical Journal D|
|Nummer van het tijdschrift||1-3|
|Status||Published - jun-2003|
|Evenement||11th International Symposium on Small Particles and Inorganic Clusters (ISSPIC 11) - , France|
Duur: 9-sep-2002 → 13-sep-2002