Resonant dissociation of DNA bases by subionization electrons

被引：230

作者：

Huels, MA ^{[1
]}

Hahndorf, I

Illenberger, E

Sanche, L

机构：

[1] Univ Sherbrooke, Fac Med, Dept Med Nucl & Radiobiol, Sherbrooke, PQ J1H 5N4, Canada

[2] Free Univ Berlin, Inst Phys & Theoret Chem, D-14195 Berlin, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 1998年 / 108卷 / 04期

关键词：

D O I：

10.1063/1.475503

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have measured the electron energy dependence for production of a great variety of anion fragments, induced by resonant attachment of subionization electrons to thymine (T) and cytosine (C) within femto-second time scales. At the lowest electron energies we also observe stable molecular anions of these bases, viz., T- and C-. Our measurements suggest that this resonant mechanism may relate to critical damage of irradiated cellular DNA by subionization electrons prior to thermalization. (C) 1998 American Institute of Physics. [S0021-9606(98)02504-5].

引用

页码：1309 / 1312

页数：4

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