Multiple ionization and fragmentation of the DNA base thymine by interaction with Cq+ ions

被引：41
作者：
de Vries, J [1 ]
Hoekstra, R [1 ]
Morgenstern, R [1 ]
Schlathölter, T [1 ]
机构：
[1] Univ Groningen, KVI Atom Phys, NL-9747 AA Groningen, Netherlands
来源：
EUROPEAN PHYSICAL JOURNAL D | 2003年 / 24卷 / 1-3期
关键词：
D O I：
10.1140/epjd/e2003-00117-6
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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收藏
页码：161 / 164
页数：4
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