Comparison between X-ray photon and secondary electron damage to DNA in vacuum
Article Abstract:
The projected X-ray energy dependence of the low energy electron (LEE) enhancement factor for the single stand break (SSB) and double strand break (DSB) in monolayer DNA is discussed. The investigation of the secondary electrons (SEs) induced damage to large biomolecules allows direct comparison of the yield of products induced by high energy photon and LEEs under identical experimental conditions.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Hydrogen atom loss in pyrimidine DNA bases induced by low-energy electrons: Energetic predicted by theory
Article Abstract:
Low energy electrons (LEEs) induce fragmentation of pyrimidine bases such as uracil, thymine and cytosine in the gas and condensed phases. The changes in energy, enthalpy and free energy for a complete separation of an H atom or a methyl group from the anionic base as well as bond dissociation energies of neutral bases are calculated at the CBS-Q level.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Mechanisms for low-energy (0.5-30 eV) electron-induced pyrimidine ring fragmentation within thymine- and halogen-substituted single strands of DNA
Article Abstract:
It has been established that the impact of electrons of energies below 30 eV on Cy*6(T and FU, BrU, IU)3 oligomers chemisorbed on gold produces ring fragmentation of the DNA bases prompting the formation and desorption of CN and OCN (H2NCN) neutral fragments.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
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