Low-energy positron scattering from gas-phase uracil

Jan Franz; Franco A. Gianturco; Isabella Baccarelli

doi:10.1140/epjd/e2014-40796-0

2024 Impact factor 1.5

Atomic, Molecular, Optical and Plasma Physics

Topical issue: Electron and Positron Induced Processes. Guest editors: Michael Brunger, Radu Campeanu, Masamitsu Hoshino, Oddur Ingólfsson, Paulo Limão-Vieira, Nigel Mason, Yasuyuki Nagashima and Hajime Tanuma

Open Access

Eur. Phys. J. D (2014) 68: 183
https://doi.org/10.1140/epjd/e2014-40796-0

Regular Article

Low-energy positron scattering from gas-phase uracil^*

Jan Franz¹^,2^a, Franco A. Gianturco³^,4 and Isabella Baccarelli⁵

¹ Department of Atomic, Molecular and Optical Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland
² Interdisciplinary Laboratory for Computational Science, FBK-CMM, via Sommarive 18, 38123 Povo, Trento, Italy
³ Intitute of Ion Physics, The University of Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria
⁴ Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
⁵ CINECA, Via de Tizii 6, 00185 Rome, Italy

^a e-mail: j.franz@ucl.ac.uk

Received: 14 December 2013
Received in final form: 25 March 2014
Published online: 1 July 2014

Abstract

Quantum scattering calculations are presented for the interaction of low energy positrons with the uracil molecule, an important component of biological systems. The rotational elastic and inelastic cross sections and vibrational inelastic cross sections are reported and compared with existing experiments, indicating a general trend of the cross sections different from the experimental findings and in line with what should be expected from the behavior of the total cross sections in similar polar targets. Some specific considerations can be drawn on the reliability of existing experiments, as to their size vis-à-vis to the computed integral cross sections over the same range of energies.

Contribution to the Topical Issue “Electron and Positron Induced Processes”, edited by Michael Brunger, Radu Campeanu, Masamitsu Hoshino, Oddur Ingólfsson, Paulo Limão-Vieira, Nigel Mason, Yasuyuki Nagashima and Hajime Tanuma.

© The Author(s) 2014

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