scholarly journals Dissociative electron attachment to the gas-phase nucleobase hypoxanthine

2015 ◽  
Vol 142 (21) ◽  
pp. 215101 ◽  
Author(s):  
M. Michele Dawley ◽  
Katrin Tanzer ◽  
Ian Carmichael ◽  
Stephan Denifl ◽  
Sylwia Ptasińska
Keyword(s):  
Gas Phase ◽  
Electron Attachment ◽  
Dissociative Electron Attachment

Dissociative electron attachment to gas-phase 5-bromouracil

2000 ◽  
Vol 113 (7) ◽  
pp. 2517-2521 ◽  
Author(s):  
H. Abdoul-Carime ◽  
M. A. Huels ◽  
F. Brüning ◽  
E. Illenberger ◽  
L. Sanche
Keyword(s):  
Gas Phase ◽  
Electron Attachment ◽  
Dissociative Electron Attachment

Dissociative electron attachment to gas phase thiothymine: experimental and theoretical approaches

2014 ◽  
Vol 16 (11) ◽  
pp. 5342-5348 ◽  
Author(s):  
J. Kopyra ◽  
S. Freza ◽  
H. Abdoul-Carime ◽  
M. Marchaj ◽  
P. Skurski
Keyword(s):  
Gas Phase ◽  
Electron Attachment ◽  
Dissociative Electron Attachment ◽  
Theoretical Approaches

Dissociative electron attachment to gas-phase glycine

2003 ◽  
Vol 377 (7-8) ◽  
pp. 1115-1119 ◽  
Author(s):  
S. Ptasinska ◽  
S. Denifl ◽  
A. Abedi ◽  
P. Scheier ◽  
T. D. M�rk
Keyword(s):  
Gas Phase ◽  
Electron Attachment ◽  
Dissociative Electron Attachment

Dissociative electron attachment to gas phase valine: A combined experimental and theoretical study

2006 ◽  
Vol 125 (20) ◽  
pp. 204301 ◽  
Author(s):  
Peter Papp ◽  
Jan Urban ◽  
Štefan Matejčík ◽  
Michal Stano ◽  
Oddur Ingolfsson
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Electron Attachment ◽  
Dissociative Electron Attachment

scholarly journals Theoretical insights into the dissociation process for dissociative electron attachment to adenine and its tautomer

2020 ◽  
Vol 38 (4) ◽  
pp. 277-284
Author(s):  
Ying Zhang ◽  
Xing Wang ◽  
Zhongfeng Xu
Keyword(s):  
Molecular Dynamics ◽  
Density Matrix ◽  
Gas Phase ◽  
Electron Attachment ◽  
Closed Shell ◽  
Md Simulations ◽  
Ab Initio Molecular Dynamics ◽  
Dissociative Electron Attachment ◽  
Dissociation Process ◽  
First Time

AbstractThe ab initio molecular dynamics (MD) simulations using an atom-centered density matrix propagation method are carried out in the first time to investigate the dissociative electron attachment (DEA) processes of adenine and its tautomer in the gas phase. Since the incoming electron are captured on the lowest π∗ anti-bond orbital, which is led to the different N–H bond, the C–H bond and the C–N bond are broken. The dominant anion observed in DEA dissociation process is the closed-shell dehydrogenated anion (Ade − H)−. The additional anions (Ade − NH2)− and (Ade − 2H)− are also obtained in ADMP simulation. The results are well consistent with the previous DEA experimental results. Thus, the ADMP method is used to gain a more intuitive and better understanding of the necessary dissociation process in the DEA experiment.

scholarly journals A Missing Puzzle in Dissociative Electron Attachment to Biomolecules: The Detection of Radicals

Atoms ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 77
Author(s):  
Sylwia Ptasinska
Keyword(s):  
Gas Phase ◽  
Electron Attachment ◽  
Dissociative Electron Attachment ◽  
Molecular Physics ◽  
Research Perspective ◽  
The Past ◽  
Gas Phase Molecules ◽  
Low Energy Electrons ◽  
Atomic And Molecular Physics ◽  
Radiation Research

Ionizing radiation releases a flood of low-energy electrons that often causes the fragmentation of the molecular species it encounters. Special attention has been paid to the electrons’ contribution to DNA damage via the dissociative electron attachment (DEA) process. Although numerous research groups worldwide have probed these processes in the past, and many significant achievements have been made, some technical challenges have hindered researchers from obtaining a complete picture of DEA. Therefore, this research perspective calls urgently for the implementation of advanced techniques to identify non-charged radicals that form from such a decomposition of gas-phase molecules. Having well-described DEA products offers a promise to benefit society by straddling the boundary between physics, chemistry, and biology, and it brings the tools of atomic and molecular physics to bear on relevant issues of radiation research and medicine.

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