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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页码：161 / 164

页数：4

相关论文

共 15 条

[1] Dissociative electron attachment to gas-phase 5-bromouracil [J].

Abdoul-Carime, H ;

Huels, MA ;

Brüning, F ;

Illenberger, E ;

Sanche, L .

JOURNAL OF CHEMICAL PHYSICS, 2000, 113 (07) :2517-2521

[2]

Boudaïffa B, 2000, SCIENCE, V287, P1658, DOI 10.1126/science.287.5458.1658

[3] Inelastic interactions of protons and electrons with biologically relevant molecules [J].

Coupier, B ;

Farizon, B ;

Farizon, M ;

Gaillard, MJ ;

Gobet, F ;

Faria, NVD ;

Jalbert, G ;

Ouaskit, S ;

Carré, M ;

Gstir, B ;

Hanel, G ;

Denifl, S ;

Feketeova, L ;

Scheier, P ;

Märk, TD .

EUROPEAN PHYSICAL JOURNAL D, 2002, 20 (03) :459-468

[4] Cq+-induced excitation and fragmentation of uracil:: effects of the projectile electronic structure [J].

de Vries, J ;

Hoekstra, R ;

Morgenstern, R ;

Schlathölter, T .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2002, 35 (21) :4373-4381

[5] A PHOTOELECTRON ION ION TRIPLE COINCIDENCE TECHNIQUE FOR THE STUDY OF DOUBLE PHOTOIONIZATION AND ITS CONSEQUENCES [J].

ELAND, JHD ;

WORT, FS ;

ROYDS, RN .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1986, 41 (3-4) :297-309

[6] Projectile atomic-number effect on ion-induced fragmentation and ionization of fullerenes -: art. no. 033201 [J].

Hadjar, O ;

Hoekstra, R ;

Morgenstern, R ;

Schlathölter, T .

PHYSICAL REVIEW A, 2001, 63 (03) :1-8

[7]

HANEL G, 2002, THESIS U INNSBRUCK

[8] Resonant dissociation of DNA bases by subionization electrons [J].

Huels, MA ;

Hahndorf, I ;

Illenberger, E ;

Sanche, L .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (04) :1309-1312

[9] COLLISION-INDUCED DISSOCIATION OF URACIL AND ITS DERIVATIVES [J].

NELSON, CC ;

MCCLOSKEY, JA .

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1994, 5 (05) :339-349

[10] Femtosecond photo-ionization of nucleic acid bases: electronic lifetimes and electron yields [J].

Reuther, A ;

Iglev, H ;

Laenen, R ;

Laubereau, A .

CHEMICAL PHYSICS LETTERS, 2000, 325 (04) :360-368