Eur. Phys. J. D (2015) 69: 143
https://doi.org/10.1140/epjd/e2015-60096-5

Regular Article

A dipole-driven path for electron and positron attachments to gas-phase uracil and pyrimidine molecules: a quantum scattering analysis^*

¹ Institute of Ion Physics, The University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
² Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
³ Department of Theoretical Physics and Quantum Informatics, Faculty of Applied Physics and Mathematics, Gdansk, University of Technology, ul. Narutowicza, 11/12, 80-952 Gdansk, Poland
⁴ CNR-ISMN and University of Rome ‘Sapienza’, P.le Aldo Moro 5, 00185 Rome, Italy

^a e-mail: francesco.gianturco@uniroma1.it

Received: 13 February 2015
Received in final form: 15 April 2015
Published online: 2 June 2015

Abstract

Electron and positron scattering processes in the gas-phase are analysed for uracil and pyrimidine molecules using a multichannel quantum approach at energies close to threshold. The special effects on the scattering dynamics induced by the large dipole moments in both molecules on the spatial features of the continuum leptonic wavefunctions are here linked to the possible bound states of the Rydberg-like molecular anions or ‘positroned’ molecules which could be reached via further couplings with molecular internal degrees of freedom.