This study presents new parameters for proton ionisation cross sections in guanine, adenine, thymine, and cytosine based upon the semi-empirical Rudd model. The same model was used to find differential electron cross sections considering a speed scaling procedure. To accelerate computation, the total electron cross sections were obtained using the binary-encounter-Bethe approximation instead of the integrated Rudd formula. The cross sections were implemented in the Geant4 simulation toolkit as Geant4-DNA processes, and simulations were carried out measuring protons lineal energies in spherical micrometric volumes filled with water, adenine, thymine, guanine, and cytosine. Large differences were seen in the lineal energies evaluated for the different materials, with the lineal energy measured in guanine being sometimes twice that of water. This suggests that the cross sections developed here should be considered in biological simulations where cellular substructures are modelled, in contrast to the current approach which approximates these volumes as consisting of liquid water.
Skip Nav Destination
Article navigation
7 July 2017
Research Article|
July 05 2017
Calculation of lineal energies for water and DNA bases using the Rudd model cross sections integrated within the Geant4-DNA processes
Z. Francis;
Z. Francis
1
Department of Physics, Faculty of Sciences, Université Saint Joseph
, Beirut, Lebanon
Search for other works by this author on:
Z. El Bitar;
Z. El Bitar
2
Institut Pluridisciplinaire Hubert Curien
, Strasbourg, France
Search for other works by this author on:
S. Incerti
;
S. Incerti
3
CNRS, IN2P3, CENBG
, UMR 5797, F-33170 Gradignan, France
Search for other works by this author on:
M. A. Bernal;
M. A. Bernal
4
Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas
, São Paulo, Brazil
Search for other works by this author on:
M. Karamitros;
M. Karamitros
5
Notre Dame Radiation Laboratory, University of Notre Dame
, Notre Dame, Indiana 46556, USA
Search for other works by this author on:
H. N. Tran
H. N. Tran
6
IRFU/SPhN, CEA, Université Paris-Saclay
, F-91191 Gif-sur-Yvette, France
Search for other works by this author on:
J. Appl. Phys. 122, 014701 (2017)
Article history
Received:
February 10 2017
Accepted:
June 14 2017
Citation
Z. Francis, Z. El Bitar, S. Incerti, M. A. Bernal, M. Karamitros, H. N. Tran; Calculation of lineal energies for water and DNA bases using the Rudd model cross sections integrated within the Geant4-DNA processes. J. Appl. Phys. 7 July 2017; 122 (1): 014701. https://doi.org/10.1063/1.4990293
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Scaling effects on the microstructure and thermomechanical response of through silicon vias (TSVs)
Shuhang Lyu, Thomas Beechem, et al.
Related Content
Secondary Electrons from Water Vapor with the Impact of 6.0 MeV/u He2+ Ions: Atomic Data and their Application to Biomedical Investigations
AIP Conference Proceedings (May 2005)
Lineal energy calibration of mini tissue-equivalent gas-proportional counters (TEPC)
AIP Conference Proceedings (July 2013)
The impact of new Geant4-DNA cross section models on electron track structure simulations in liquid water
J. Appl. Phys. (May 2016)
Double differential cross sections for proton induced electron emission from molecular analogues of DNA constituents for energies in the Bragg peak region
J. Chem. Phys. (September 2016)
Modeling of yield estimation for DNA strand breaks based on Monte Carlo simulations of electron track structure in liquid water
J. Appl. Phys. (September 2019)