Structure and dynamics of near-threshold leptons driven by dipolar interactions: an accurate computational study for the DNA purinic bases

Fabio Carelli; Francesco Antonio Gianturco

doi:10.1140/epjd/e2016-70106-9

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2021 Impact factor 1.611

Atomic, Molecular, Optical and Plasma Physics

Topical Issue: Advances in Positron and Electron Scattering

Open Access

Eur. Phys. J. D (2016) 70: 145
https://doi.org/10.1140/epjd/e2016-70106-9

Regular Article

Structure and dynamics of near-threshold leptons driven by dipolar interactions: an accurate computational study for the DNA purinic bases^*,^**

Fabio Carelli and Francesco Antonio Gianturco^a

Institut für Ionen Physik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria

^a e-mail: francesco.gianturco@uibk.ac.at

Received: 16 February 2016
Received in final form: 12 April 2016
Published online: 28 June 2016

Abstract

The interaction of low-energy scattering electrons/positrons with molecular targets characterized by a “supercritical” permanent dipole moment (≳2.0 D) presents special physical characteristics that affect their spatial distributions, around the nuclear network of the molecular partners, both above and below the energy thresholds. Such special states are described as either dipole scattering states (DSS) above thresholds or as dipole bound states (DBS) below thresholds. The details of their respective behaviour will be presented and discussed in this work in the case of the purinic DNA bases of adenine and guanine. The behavior of the additional electron, in particular, will be discussed in detail by providing new computational results that will be related to the findings from recent experiments on the same DNA bases, confirming the transient electron’s behaviour surmised by them.

This work is affectionately dedicated to Michael Allan on the occasion of his official retirement. We wish to this dear friend and outstanding scientist many years to come in the happy pursuit of his many scientific interests.

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Contribution to the Topical Issue “Advances in Positron and Electron Scattering”, edited by Paulo Limao-Vieira, Gustavo Garcia, E. Krishnakumar, James Sullivan, Hajime Tanuma and Zoran Petrovic.

© The Author(s) 2016. This article is published with open access at Springerlink.com

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.