Journal ArticleDOI
Modelling low energy electron and positron tracks in biologically relevant media
Francisco J. Blanco,Antonio Muñoz,Diogo Almeida,F. Ferreira da Silva,Paulo Limão-Vieira,Martina Fuss,A.G. Sanz,Gustavo García +7 more
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TLDR
In this paper, an approach to incorporate into radiation damage models the effect of low and intermediate energy (0-100 eV) electrons and positrons, slowing down in biologically relevant ma- terials (water and representative biomolecules).Abstract:
This colloquium describes an approach to incorporate into radiation damage models the effect of low and intermediate energy (0-100 eV) electrons and positrons, slowing down in biologically relevant ma- terials (water and representative biomolecules). The core of the modelling procedure is a C++ computing programme named "Low Energy Particle Track Simulation (LEPTS)", which is compatible with available general purpose Monte Carlo packages. Input parameters are carefully selected from theoretical and ex- perimental cross section data and energy loss distribution functions. Data sources used for this purpose are reviewed showing examples of electron and positron cross section and energy loss data for interactions with different media of increasing complexity: atoms, molecules, clusters and condense matter. Finally, we show how such a model can be used to develop an effective dosimetric tool at the molecular level (i.e. nanodosimetry). Recent experimental developments to study the fragmentation induced in biologically material by charge transfer from neutrals and negative ions are also included.read more
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Journal ArticleDOI
A Complete Cross Section Data Set for Electron Scattering by Pyridine: Modelling Electron Transport in the Energy Range 0–100 eV
Filipe Costa,Ali Traoré-Dubuis,L. Álvarez,A. I. Lozano,Xueguang Ren,Alexander Dorn,Paulo Limão-Vieira,Francisco J. Blanco,J.C. Oller,Antonio Muñoz,Adrián García-Abenza,Jimena D. Gorfinkiel,Alessandra Souza Barbosa,Márcio H. F. Bettega,Peter W. Stokes,Ronald D. White,Darryl Jones,M. J. Brunger,Gustavo García +18 more
TL;DR: Electron scattering cross sections for pyridine in the energy range 0–100 eV have been critically compiled and complemented here with new measurements of electron energy loss spectra and double differential ionization cross sections.
Journal ArticleDOI
The impact of new Geant4-DNA cross section models on electron track structure simulations in liquid water
TL;DR: The most recent version of the Geant4 Monte Carlo simulation toolkit (Geant4 10.2 as mentioned in this paper ) contains a new set of physics models for low-energy electron transport in liquid water.
Journal ArticleDOI
Electron scattering and transport in biofuels, biomolecules and biomass fragments
TL;DR: In this article, a selection of experimental and theoretical cross section results for electron scattering from a range of biofuels (methanol, ethanol), biomolecules (water, tetrahydrofuran, pyrimidine, tetrahedrofurfuryl alcohol and para-benzoquinone) and molecular fragments that are formed from the action of atmospheric pressure plasmas on biomass (phenol, furfural).
Journal ArticleDOI
Scattering data for modelling positron tracks in gaseous and liquid water
Francisco J. Blanco,A M Roldan,K. Krupa,K. Krupa,Robert McEachran,Ronald D. White,Srdjan Marjanovic,Z. Lj. Petrović,Michael J. Brunger,Michael J. Brunger,Joshua Machacek,Stephen Buckman,Stephen Buckman,James Sullivan,Luca Chiari,Luca Chiari,Paulo Limão-Vieira,Gustavo García,Gustavo García +18 more
TL;DR: In this paper, the authors present a self-consistent set of scattering cross sections for positron collisions with water molecules, in the energy range 0.1-10 000 eV.
Journal ArticleDOI
The role of pyrimidine and water as underlying molecular constituents for describing radiation damage in living tissue: A comparative study
Martina Fuss,L. Ellis-Gibbings,Darryl Jones,Michael J. Brunger,Michael J. Brunger,Francisco J. Blanco,Andrés Muñoz,Paulo Limão-Vieira,Paulo Limão-Vieira,Gustavo García,Gustavo García +10 more
TL;DR: In this article, the authors acknowledge the support of the Australian Research Council (ARC) through its Centres of Excellence Program and thanks the ARC for provision of a Discovery Early Career Researcher Award.
References
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The theory of atomic structure and spectra
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The theory of atomic collisions
TL;DR: The perturbation theory has been applied to many-body problems and applications, such as electron collisions with atoms, collisions between atomic systems, nuclear collisions, and certain aspects of two-body systems under relativistic collisions.
Journal ArticleDOI
Resonant Formation of DNA Strand Breaks by Low-Energy (3 to 20 eV) Electrons
TL;DR: It is shown that reactions of such electrons, even at energies well below ionization thresholds, induce substantial yields of single- and double-strand breaks in DNA, which are caused by rapid decays of transient molecular resonances localized on the DNA's basic components.
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Inelastic Collisions of Fast Charged Particles with Atoms and Molecules-The Bethe Theory Revisited
TL;DR: In this article, the Bethe theory has been updated with a number of new developments which need to be included in that body of material, such as the ${z}^{3}$ effect and the stopping power for particles at extreme relativistic energies.
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