Eur. Phys. J. D (2016) 70: 143
https://doi.org/10.1140/epjd/e2016-70171-0

Regular Article

On the influence of low-energy ionizing radiation on the amino acid molecule: proline^*

¹ Vilnius University, Institute of Theoretical Physics and Astronomy, Sauletekio al. 3, 10222 Vilnius, Lithuania
² Institute of Electron Physics, Ukr. Nat. Acad. Sci., 21 Universitetska str., 88017 Uzhgorod, Ukraine

^a e-mail: Jelena.Tamuliene@tfai.vu.lt

Received: 5 March 2016
Received in final form: 3 May 2016
Published online: 23 June 2016

Abstract

New data on the electron-impact fragmentation of the amino acid proline molecule are presented as being related to the formation of the ionized products due to the influence of low-energy ionizing radiation on the above molecule. An extensive DFT-theory based on the theoretical approach enabled the main pathways of the proline molecules fragmentation to be elucidated. A series of the produced fragments have been identified. The absolute appearance energies for some of them have been both measured experimentally and calculated theoretically. The data of the experimental studies and theoretical calculations are compared and analyzed.