https://doi.org/10.1140/epjd/e2015-60106-8
Regular Article
On the use of additivity rules to estimate electron production cross sections in proton-biomolecule collisions*
Laboratorio Asociado al CIEMAT de Física Atómica y Molecular en
Plasmas de Fusión, Departamento de Química, módulo 13, Universidad Autónoma de
Madrid, Cantoblanco, 28049
Madrid,
Spain
a
e-mail: l.mendez@uam.es
Received: 17 February 2015
Received in final form: 8 June 2015
Published online: 19 July 2015
Additivity rules are employed to estimate electron production cross sections for proton collisions with nucleobases and amino acids, using as input experimental data for proton collisions with atoms and small molecules. Cross sections (total and single differential, in electron energy) are calculated for collision energies 10 keV ≤ E ≤ 2 MeV. The results show that this simple procedure yields cross sections in good agreement with the available experimental and theoretical cross sections at high collision energies and it is able to reproduce the energy dependence of the total cross sections, including the presence of maxima at intermediate energies.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2015
